209530240

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{179}}^1$

素因数の和:288

約数の個数: 128

約数和(自身を含む): 528768000

約数和(自身を除く): 319237760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 59, 62, 64, 80, 118, 124, 128, 155, 160, 179, 236, 248, 295, 310, 320, 358, 472, 496, 590, 620, 640, 716, 895, 944, 992, 1180, 1240, 1432, 1790, 1829, 1888, 1984, 2360, 2480, 2864, 3580, 3658, 3776, 3968, 4720, 4960, 5549, 5728, 7160, 7316, 7552, 9145, 9440, 9920, 10561, 11098, 11456, 14320, 14632, 18290, 18880, 19840, 21122, 22196, 22912, 27745, 28640, 29264, 36580, 37760, 42244, 44392, 52805, 55490, 57280, 58528, 73160, 84488, 88784, 105610, 110980, 114560, 117056, 146320, 168976, 177568, 211220, 221960, 234112, 292640, 327391, 337952, 355136, 422440, 443920, 585280, 654782, 675904, 710272, 844880, 887840, 1170560, 1309564, 1351808, 1636955, 1689760, 1775680, 2619128, 3273910, 3379520, 3551360, 5238256, 6547820, 6759040, 10476512, 13095640, 20953024, 26191280, 41906048, 52382560, 104765120, 209530240]

約数ペア:

[(1, 209530240), (2, 104765120), (4, 52382560), (5, 41906048), (8, 26191280), (10, 20953024), (16, 13095640), (20, 10476512), (31, 6759040), (32, 6547820), (40, 5238256), (59, 3551360), (62, 3379520), (64, 3273910), (80, 2619128), (118, 1775680), (124, 1689760), (128, 1636955), (155, 1351808), (160, 1309564), (179, 1170560), (236, 887840), (248, 844880), (295, 710272), (310, 675904), (320, 654782), (358, 585280), (472, 443920), (496, 422440), (590, 355136), (620, 337952), (640, 327391), (716, 292640), (895, 234112), (944, 221960), (992, 211220), (1180, 177568), (1240, 168976), (1432, 146320), (1790, 117056), (1829, 114560), (1888, 110980), (1984, 105610), (2360, 88784), (2480, 84488), (2864, 73160), (3580, 58528), (3658, 57280), (3776, 55490), (3968, 52805), (4720, 44392), (4960, 42244), (5549, 37760), (5728, 36580), (7160, 29264), (7316, 28640), (7552, 27745), (9145, 22912), (9440, 22196), (9920, 21122), (10561, 19840), (11098, 18880), (11456, 18290), (14320, 14632)]