80622640

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{131}}^1\times {\mathrm{157}}^1$

素因数の和:315

約数の個数: 120

約数和(自身を含む): 221115312

約数和(自身を除く): 140492672

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 131, 140, 157, 196, 245, 262, 280, 314, 392, 490, 524, 560, 628, 655, 784, 785, 917, 980, 1048, 1099, 1256, 1310, 1570, 1834, 1960, 2096, 2198, 2512, 2620, 3140, 3668, 3920, 4396, 4585, 5240, 5495, 6280, 6419, 7336, 7693, 8792, 9170, 10480, 10990, 12560, 12838, 14672, 15386, 17584, 18340, 20567, 21980, 25676, 30772, 32095, 36680, 38465, 41134, 43960, 51352, 61544, 64190, 73360, 76930, 82268, 87920, 102704, 102835, 123088, 128380, 143969, 153860, 164536, 205670, 256760, 287938, 307720, 329072, 411340, 513520, 575876, 615440, 719845, 822680, 1007783, 1151752, 1439690, 1645360, 2015566, 2303504, 2879380, 4031132, 5038915, 5758760, 8062264, 10077830, 11517520, 16124528, 20155660, 40311320, 80622640]

約数ペア:

[(1, 80622640), (2, 40311320), (4, 20155660), (5, 16124528), (7, 11517520), (8, 10077830), (10, 8062264), (14, 5758760), (16, 5038915), (20, 4031132), (28, 2879380), (35, 2303504), (40, 2015566), (49, 1645360), (56, 1439690), (70, 1151752), (80, 1007783), (98, 822680), (112, 719845), (131, 615440), (140, 575876), (157, 513520), (196, 411340), (245, 329072), (262, 307720), (280, 287938), (314, 256760), (392, 205670), (490, 164536), (524, 153860), (560, 143969), (628, 128380), (655, 123088), (784, 102835), (785, 102704), (917, 87920), (980, 82268), (1048, 76930), (1099, 73360), (1256, 64190), (1310, 61544), (1570, 51352), (1834, 43960), (1960, 41134), (2096, 38465), (2198, 36680), (2512, 32095), (2620, 30772), (3140, 25676), (3668, 21980), (3920, 20567), (4396, 18340), (4585, 17584), (5240, 15386), (5495, 14672), (6280, 12838), (6419, 12560), (7336, 10990), (7693, 10480), (8792, 9170)]