21155160

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:289

約数の個数: 128

約数和(自身を含む): 69672960

約数和(自身を除く): 48517800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 71, 78, 104, 120, 130, 142, 156, 191, 195, 213, 260, 284, 312, 355, 382, 390, 426, 520, 568, 573, 710, 764, 780, 852, 923, 955, 1065, 1146, 1420, 1528, 1560, 1704, 1846, 1910, 2130, 2292, 2483, 2769, 2840, 2865, 3692, 3820, 4260, 4584, 4615, 4966, 5538, 5730, 7384, 7449, 7640, 8520, 9230, 9932, 11076, 11460, 12415, 13561, 13845, 14898, 18460, 19864, 22152, 22920, 24830, 27122, 27690, 29796, 36920, 37245, 40683, 49660, 54244, 55380, 59592, 67805, 74490, 81366, 99320, 108488, 110760, 135610, 148980, 162732, 176293, 203415, 271220, 297960, 325464, 352586, 406830, 528879, 542440, 705172, 813660, 881465, 1057758, 1410344, 1627320, 1762930, 2115516, 2644395, 3525860, 4231032, 5288790, 7051720, 10577580, 21155160]

約数ペア:

[(1, 21155160), (2, 10577580), (3, 7051720), (4, 5288790), (5, 4231032), (6, 3525860), (8, 2644395), (10, 2115516), (12, 1762930), (13, 1627320), (15, 1410344), (20, 1057758), (24, 881465), (26, 813660), (30, 705172), (39, 542440), (40, 528879), (52, 406830), (60, 352586), (65, 325464), (71, 297960), (78, 271220), (104, 203415), (120, 176293), (130, 162732), (142, 148980), (156, 135610), (191, 110760), (195, 108488), (213, 99320), (260, 81366), (284, 74490), (312, 67805), (355, 59592), (382, 55380), (390, 54244), (426, 49660), (520, 40683), (568, 37245), (573, 36920), (710, 29796), (764, 27690), (780, 27122), (852, 24830), (923, 22920), (955, 22152), (1065, 19864), (1146, 18460), (1420, 14898), (1528, 13845), (1560, 13561), (1704, 12415), (1846, 11460), (1910, 11076), (2130, 9932), (2292, 9230), (2483, 8520), (2769, 7640), (2840, 7449), (2865, 7384), (3692, 5730), (3820, 5538), (4260, 4966), (4584, 4615)]