21685500

素因数分解:

$2^2\times 3^2\times 5^3\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:165

約数の個数: 144

約数和(自身を含む): 70412160

約数和(自身を除く): 48726660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 61, 75, 79, 90, 100, 122, 125, 150, 158, 180, 183, 225, 237, 244, 250, 300, 305, 316, 366, 375, 395, 450, 474, 500, 549, 610, 711, 732, 750, 790, 900, 915, 948, 1098, 1125, 1185, 1220, 1422, 1500, 1525, 1580, 1830, 1975, 2196, 2250, 2370, 2745, 2844, 3050, 3555, 3660, 3950, 4500, 4575, 4740, 4819, 5490, 5925, 6100, 7110, 7625, 7900, 9150, 9638, 9875, 10980, 11850, 13725, 14220, 14457, 15250, 17775, 18300, 19276, 19750, 22875, 23700, 24095, 27450, 28914, 29625, 30500, 35550, 39500, 43371, 45750, 48190, 54900, 57828, 59250, 68625, 71100, 72285, 86742, 88875, 91500, 96380, 118500, 120475, 137250, 144570, 173484, 177750, 216855, 240950, 274500, 289140, 355500, 361425, 433710, 481900, 602375, 722850, 867420, 1084275, 1204750, 1445700, 1807125, 2168550, 2409500, 3614250, 4337100, 5421375, 7228500, 10842750, 21685500]

約数ペア:

[(1, 21685500), (2, 10842750), (3, 7228500), (4, 5421375), (5, 4337100), (6, 3614250), (9, 2409500), (10, 2168550), (12, 1807125), (15, 1445700), (18, 1204750), (20, 1084275), (25, 867420), (30, 722850), (36, 602375), (45, 481900), (50, 433710), (60, 361425), (61, 355500), (75, 289140), (79, 274500), (90, 240950), (100, 216855), (122, 177750), (125, 173484), (150, 144570), (158, 137250), (180, 120475), (183, 118500), (225, 96380), (237, 91500), (244, 88875), (250, 86742), (300, 72285), (305, 71100), (316, 68625), (366, 59250), (375, 57828), (395, 54900), (450, 48190), (474, 45750), (500, 43371), (549, 39500), (610, 35550), (711, 30500), (732, 29625), (750, 28914), (790, 27450), (900, 24095), (915, 23700), (948, 22875), (1098, 19750), (1125, 19276), (1185, 18300), (1220, 17775), (1422, 15250), (1500, 14457), (1525, 14220), (1580, 13725), (1830, 11850), (1975, 10980), (2196, 9875), (2250, 9638), (2370, 9150), (2745, 7900), (2844, 7625), (3050, 7110), (3555, 6100), (3660, 5925), (3950, 5490), (4500, 4819), (4575, 4740)]