19997640

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4273}}^1$

素因数の和:4303

約数の個数: 96

約数和(自身を含む): 70008120

約数和(自身を除く): 50010480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 30, 36, 39, 40, 45, 52, 60, 65, 72, 78, 90, 104, 117, 120, 130, 156, 180, 195, 234, 260, 312, 360, 390, 468, 520, 585, 780, 936, 1170, 1560, 2340, 4273, 4680, 8546, 12819, 17092, 21365, 25638, 34184, 38457, 42730, 51276, 55549, 64095, 76914, 85460, 102552, 111098, 128190, 153828, 166647, 170920, 192285, 222196, 256380, 277745, 307656, 333294, 384570, 444392, 499941, 512760, 555490, 666588, 769140, 833235, 999882, 1110980, 1333176, 1538280, 1666470, 1999764, 2221960, 2499705, 3332940, 3999528, 4999410, 6665880, 9998820, 19997640]

約数ペア:

[(1, 19997640), (2, 9998820), (3, 6665880), (4, 4999410), (5, 3999528), (6, 3332940), (8, 2499705), (9, 2221960), (10, 1999764), (12, 1666470), (13, 1538280), (15, 1333176), (18, 1110980), (20, 999882), (24, 833235), (26, 769140), (30, 666588), (36, 555490), (39, 512760), (40, 499941), (45, 444392), (52, 384570), (60, 333294), (65, 307656), (72, 277745), (78, 256380), (90, 222196), (104, 192285), (117, 170920), (120, 166647), (130, 153828), (156, 128190), (180, 111098), (195, 102552), (234, 85460), (260, 76914), (312, 64095), (360, 55549), (390, 51276), (468, 42730), (520, 38457), (585, 34184), (780, 25638), (936, 21365), (1170, 17092), (1560, 12819), (2340, 8546), (4273, 4680)]