18633940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{149}}^1$

素因数の和:221

約数の個数: 72

約数和(自身を含む): 43810200

約数和(自身を除く): 25176260

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 149, 169, 185, 260, 298, 338, 370, 481, 596, 676, 740, 745, 845, 962, 1490, 1690, 1924, 1937, 2405, 2980, 3380, 3874, 4810, 5513, 6253, 7748, 9620, 9685, 11026, 12506, 19370, 22052, 25012, 25181, 27565, 31265, 38740, 50362, 55130, 62530, 71669, 100724, 110260, 125060, 125905, 143338, 251810, 286676, 358345, 503620, 716690, 931697, 1433380, 1863394, 3726788, 4658485, 9316970, 18633940]

約数ペア:

[(1, 18633940), (2, 9316970), (4, 4658485), (5, 3726788), (10, 1863394), (13, 1433380), (20, 931697), (26, 716690), (37, 503620), (52, 358345), (65, 286676), (74, 251810), (130, 143338), (148, 125905), (149, 125060), (169, 110260), (185, 100724), (260, 71669), (298, 62530), (338, 55130), (370, 50362), (481, 38740), (596, 31265), (676, 27565), (740, 25181), (745, 25012), (845, 22052), (962, 19370), (1490, 12506), (1690, 11026), (1924, 9685), (1937, 9620), (2405, 7748), (2980, 6253), (3380, 5513), (3874, 4810)]