19954610

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:195

約数の個数: 64

約数和(自身を含む): 41126400

約数和(自身を除く): 21171790

約数列:

[1, 2, 5, 10, 13, 26, 29, 58, 65, 67, 79, 130, 134, 145, 158, 290, 335, 377, 395, 670, 754, 790, 871, 1027, 1742, 1885, 1943, 2054, 2291, 3770, 3886, 4355, 4582, 5135, 5293, 8710, 9715, 10270, 10586, 11455, 19430, 22910, 25259, 26465, 29783, 50518, 52930, 59566, 68809, 126295, 137618, 148915, 153497, 252590, 297830, 306994, 344045, 688090, 767485, 1534970, 1995461, 3990922, 9977305, 19954610]

約数ペア:

[(1, 19954610), (2, 9977305), (5, 3990922), (10, 1995461), (13, 1534970), (26, 767485), (29, 688090), (58, 344045), (65, 306994), (67, 297830), (79, 252590), (130, 153497), (134, 148915), (145, 137618), (158, 126295), (290, 68809), (335, 59566), (377, 52930), (395, 50518), (670, 29783), (754, 26465), (790, 25259), (871, 22910), (1027, 19430), (1742, 11455), (1885, 10586), (1943, 10270), (2054, 9715), (2291, 8710), (3770, 5293), (3886, 5135), (4355, 4582)]