16821480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{263}}^1$

素因数の和:331

約数の個数: 128

約数和(自身を含む): 55883520

約数和(自身を除く): 39062040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 41, 52, 60, 65, 78, 82, 104, 120, 123, 130, 156, 164, 195, 205, 246, 260, 263, 312, 328, 390, 410, 492, 520, 526, 533, 615, 780, 789, 820, 984, 1052, 1066, 1230, 1315, 1560, 1578, 1599, 1640, 2104, 2132, 2460, 2630, 2665, 3156, 3198, 3419, 3945, 4264, 4920, 5260, 5330, 6312, 6396, 6838, 7890, 7995, 10257, 10520, 10660, 10783, 12792, 13676, 15780, 15990, 17095, 20514, 21320, 21566, 27352, 31560, 31980, 32349, 34190, 41028, 43132, 51285, 53915, 63960, 64698, 68380, 82056, 86264, 102570, 107830, 129396, 136760, 140179, 161745, 205140, 215660, 258792, 280358, 323490, 410280, 420537, 431320, 560716, 646980, 700895, 841074, 1121432, 1293960, 1401790, 1682148, 2102685, 2803580, 3364296, 4205370, 5607160, 8410740, 16821480]

約数ペア:

[(1, 16821480), (2, 8410740), (3, 5607160), (4, 4205370), (5, 3364296), (6, 2803580), (8, 2102685), (10, 1682148), (12, 1401790), (13, 1293960), (15, 1121432), (20, 841074), (24, 700895), (26, 646980), (30, 560716), (39, 431320), (40, 420537), (41, 410280), (52, 323490), (60, 280358), (65, 258792), (78, 215660), (82, 205140), (104, 161745), (120, 140179), (123, 136760), (130, 129396), (156, 107830), (164, 102570), (195, 86264), (205, 82056), (246, 68380), (260, 64698), (263, 63960), (312, 53915), (328, 51285), (390, 43132), (410, 41028), (492, 34190), (520, 32349), (526, 31980), (533, 31560), (615, 27352), (780, 21566), (789, 21320), (820, 20514), (984, 17095), (1052, 15990), (1066, 15780), (1230, 13676), (1315, 12792), (1560, 10783), (1578, 10660), (1599, 10520), (1640, 10257), (2104, 7995), (2132, 7890), (2460, 6838), (2630, 6396), (2665, 6312), (3156, 5330), (3198, 5260), (3419, 4920), (3945, 4264)]