20642700

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:176

約数の個数: 144

約数和(自身を含む): 66106880

約数和(自身を除く): 45464180

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 67, 75, 78, 79, 100, 130, 134, 150, 156, 158, 195, 201, 237, 260, 268, 300, 316, 325, 335, 390, 395, 402, 474, 650, 670, 780, 790, 804, 871, 948, 975, 1005, 1027, 1185, 1300, 1340, 1580, 1675, 1742, 1950, 1975, 2010, 2054, 2370, 2613, 3081, 3350, 3484, 3900, 3950, 4020, 4108, 4355, 4740, 5025, 5135, 5226, 5293, 5925, 6162, 6700, 7900, 8710, 10050, 10270, 10452, 10586, 11850, 12324, 13065, 15405, 15879, 17420, 20100, 20540, 21172, 21775, 23700, 25675, 26130, 26465, 30810, 31758, 43550, 51350, 52260, 52930, 61620, 63516, 65325, 68809, 77025, 79395, 87100, 102700, 105860, 130650, 132325, 137618, 154050, 158790, 206427, 261300, 264650, 275236, 308100, 317580, 344045, 396975, 412854, 529300, 688090, 793950, 825708, 1032135, 1376180, 1587900, 1720225, 2064270, 3440450, 4128540, 5160675, 6880900, 10321350, 20642700]

約数ペア:

[(1, 20642700), (2, 10321350), (3, 6880900), (4, 5160675), (5, 4128540), (6, 3440450), (10, 2064270), (12, 1720225), (13, 1587900), (15, 1376180), (20, 1032135), (25, 825708), (26, 793950), (30, 688090), (39, 529300), (50, 412854), (52, 396975), (60, 344045), (65, 317580), (67, 308100), (75, 275236), (78, 264650), (79, 261300), (100, 206427), (130, 158790), (134, 154050), (150, 137618), (156, 132325), (158, 130650), (195, 105860), (201, 102700), (237, 87100), (260, 79395), (268, 77025), (300, 68809), (316, 65325), (325, 63516), (335, 61620), (390, 52930), (395, 52260), (402, 51350), (474, 43550), (650, 31758), (670, 30810), (780, 26465), (790, 26130), (804, 25675), (871, 23700), (948, 21775), (975, 21172), (1005, 20540), (1027, 20100), (1185, 17420), (1300, 15879), (1340, 15405), (1580, 13065), (1675, 12324), (1742, 11850), (1950, 10586), (1975, 10452), (2010, 10270), (2054, 10050), (2370, 8710), (2613, 7900), (3081, 6700), (3350, 6162), (3484, 5925), (3900, 5293), (3950, 5226), (4020, 5135), (4108, 5025), (4355, 4740)]