640939008

素因数分解:

$2^{10}\times 3^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:260

約数の個数: 176

約数和(自身を含む): 1834112000

約数和(自身を除く): 1193172992

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 19, 24, 32, 38, 48, 57, 64, 76, 79, 96, 114, 128, 139, 152, 158, 192, 228, 237, 256, 278, 304, 316, 384, 417, 456, 474, 512, 556, 608, 632, 768, 834, 912, 948, 1024, 1112, 1216, 1264, 1501, 1536, 1668, 1824, 1896, 2224, 2432, 2528, 2641, 3002, 3072, 3336, 3648, 3792, 4448, 4503, 4864, 5056, 5282, 6004, 6672, 7296, 7584, 7923, 8896, 9006, 9728, 10112, 10564, 10981, 12008, 13344, 14592, 15168, 15846, 17792, 18012, 19456, 20224, 21128, 21962, 24016, 26688, 29184, 30336, 31692, 32943, 35584, 36024, 40448, 42256, 43924, 48032, 53376, 58368, 60672, 63384, 65886, 71168, 72048, 80896, 84512, 87848, 96064, 106752, 121344, 126768, 131772, 142336, 144096, 169024, 175696, 192128, 208639, 213504, 242688, 253536, 263544, 288192, 338048, 351392, 384256, 417278, 427008, 507072, 527088, 576384, 625917, 676096, 702784, 768512, 834556, 1014144, 1054176, 1152768, 1251834, 1352192, 1405568, 1537024, 1669112, 2028288, 2108352, 2305536, 2503668, 2704384, 2811136, 3338224, 4056576, 4216704, 4611072, 5007336, 5622272, 6676448, 8113152, 8433408, 10014672, 11244544, 13352896, 16866816, 20029344, 26705792, 33733632, 40058688, 53411584, 80117376, 106823168, 160234752, 213646336, 320469504, 640939008]

約数ペア:

[(1, 640939008), (2, 320469504), (3, 213646336), (4, 160234752), (6, 106823168), (8, 80117376), (12, 53411584), (16, 40058688), (19, 33733632), (24, 26705792), (32, 20029344), (38, 16866816), (48, 13352896), (57, 11244544), (64, 10014672), (76, 8433408), (79, 8113152), (96, 6676448), (114, 5622272), (128, 5007336), (139, 4611072), (152, 4216704), (158, 4056576), (192, 3338224), (228, 2811136), (237, 2704384), (256, 2503668), (278, 2305536), (304, 2108352), (316, 2028288), (384, 1669112), (417, 1537024), (456, 1405568), (474, 1352192), (512, 1251834), (556, 1152768), (608, 1054176), (632, 1014144), (768, 834556), (834, 768512), (912, 702784), (948, 676096), (1024, 625917), (1112, 576384), (1216, 527088), (1264, 507072), (1501, 427008), (1536, 417278), (1668, 384256), (1824, 351392), (1896, 338048), (2224, 288192), (2432, 263544), (2528, 253536), (2641, 242688), (3002, 213504), (3072, 208639), (3336, 192128), (3648, 175696), (3792, 169024), (4448, 144096), (4503, 142336), (4864, 131772), (5056, 126768), (5282, 121344), (6004, 106752), (6672, 96064), (7296, 87848), (7584, 84512), (7923, 80896), (8896, 72048), (9006, 71168), (9728, 65886), (10112, 63384), (10564, 60672), (10981, 58368), (12008, 53376), (13344, 48032), (14592, 43924), (15168, 42256), (15846, 40448), (17792, 36024), (18012, 35584), (19456, 32943), (20224, 31692), (21128, 30336), (21962, 29184), (24016, 26688)]