21213990

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{223}}^1$

素因数の和:394

約数の個数: 96

約数和(自身を含む): 63737856

約数和(自身を除く): 42523866

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 105, 126, 151, 210, 223, 302, 315, 446, 453, 630, 669, 755, 906, 1057, 1115, 1338, 1359, 1510, 1561, 2007, 2114, 2230, 2265, 2718, 3122, 3171, 3345, 4014, 4530, 4683, 5285, 6342, 6690, 6795, 7805, 9366, 9513, 10035, 10570, 13590, 14049, 15610, 15855, 19026, 20070, 23415, 28098, 31710, 33673, 46830, 47565, 67346, 70245, 95130, 101019, 140490, 168365, 202038, 235711, 303057, 336730, 471422, 505095, 606114, 707133, 1010190, 1178555, 1414266, 1515285, 2121399, 2357110, 3030570, 3535665, 4242798, 7071330, 10606995, 21213990]

約数ペア:

[(1, 21213990), (2, 10606995), (3, 7071330), (5, 4242798), (6, 3535665), (7, 3030570), (9, 2357110), (10, 2121399), (14, 1515285), (15, 1414266), (18, 1178555), (21, 1010190), (30, 707133), (35, 606114), (42, 505095), (45, 471422), (63, 336730), (70, 303057), (90, 235711), (105, 202038), (126, 168365), (151, 140490), (210, 101019), (223, 95130), (302, 70245), (315, 67346), (446, 47565), (453, 46830), (630, 33673), (669, 31710), (755, 28098), (906, 23415), (1057, 20070), (1115, 19026), (1338, 15855), (1359, 15610), (1510, 14049), (1561, 13590), (2007, 10570), (2114, 10035), (2230, 9513), (2265, 9366), (2718, 7805), (3122, 6795), (3171, 6690), (3345, 6342), (4014, 5285), (4530, 4683)]