389615720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{211}}^1$

素因数の和:355

約数の個数: 128

約数和(自身を含む): 980864640

約数和(自身を除く): 591248920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 53, 65, 67, 104, 106, 130, 134, 211, 212, 260, 265, 268, 335, 422, 424, 520, 530, 536, 670, 689, 844, 871, 1055, 1060, 1340, 1378, 1688, 1742, 2110, 2120, 2680, 2743, 2756, 3445, 3484, 3551, 4220, 4355, 5486, 5512, 6890, 6968, 7102, 8440, 8710, 10972, 11183, 13715, 13780, 14137, 14204, 17420, 17755, 21944, 22366, 27430, 27560, 28274, 28408, 34840, 35510, 44732, 46163, 54860, 55915, 56548, 70685, 71020, 89464, 92326, 109720, 111830, 113096, 141370, 142040, 145379, 183781, 184652, 223660, 230815, 282740, 290758, 367562, 369304, 447320, 461630, 565480, 581516, 726895, 735124, 749261, 918905, 923260, 1163032, 1453790, 1470248, 1498522, 1837810, 1846520, 2907580, 2997044, 3675620, 3746305, 5815160, 5994088, 7351240, 7492610, 9740393, 14985220, 19480786, 29970440, 38961572, 48701965, 77923144, 97403930, 194807860, 389615720]

約数ペア:

[(1, 389615720), (2, 194807860), (4, 97403930), (5, 77923144), (8, 48701965), (10, 38961572), (13, 29970440), (20, 19480786), (26, 14985220), (40, 9740393), (52, 7492610), (53, 7351240), (65, 5994088), (67, 5815160), (104, 3746305), (106, 3675620), (130, 2997044), (134, 2907580), (211, 1846520), (212, 1837810), (260, 1498522), (265, 1470248), (268, 1453790), (335, 1163032), (422, 923260), (424, 918905), (520, 749261), (530, 735124), (536, 726895), (670, 581516), (689, 565480), (844, 461630), (871, 447320), (1055, 369304), (1060, 367562), (1340, 290758), (1378, 282740), (1688, 230815), (1742, 223660), (2110, 184652), (2120, 183781), (2680, 145379), (2743, 142040), (2756, 141370), (3445, 113096), (3484, 111830), (3551, 109720), (4220, 92326), (4355, 89464), (5486, 71020), (5512, 70685), (6890, 56548), (6968, 55915), (7102, 54860), (8440, 46163), (8710, 44732), (10972, 35510), (11183, 34840), (13715, 28408), (13780, 28274), (14137, 27560), (14204, 27430), (17420, 22366), (17755, 21944)]