21201390

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{461}}^1$

素因数の和:554

約数の個数: 96

約数和(自身を含む): 63999936

約数和(自身を除く): 42798546

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 73, 90, 105, 126, 146, 210, 219, 315, 365, 438, 461, 511, 630, 657, 730, 922, 1022, 1095, 1314, 1383, 1533, 2190, 2305, 2555, 2766, 3066, 3227, 3285, 4149, 4599, 4610, 5110, 6454, 6570, 6915, 7665, 8298, 9198, 9681, 13830, 15330, 16135, 19362, 20745, 22995, 29043, 32270, 33653, 41490, 45990, 48405, 58086, 67306, 96810, 100959, 145215, 168265, 201918, 235571, 290430, 302877, 336530, 471142, 504795, 605754, 706713, 1009590, 1177855, 1413426, 1514385, 2120139, 2355710, 3028770, 3533565, 4240278, 7067130, 10600695, 21201390]

約数ペア:

[(1, 21201390), (2, 10600695), (3, 7067130), (5, 4240278), (6, 3533565), (7, 3028770), (9, 2355710), (10, 2120139), (14, 1514385), (15, 1413426), (18, 1177855), (21, 1009590), (30, 706713), (35, 605754), (42, 504795), (45, 471142), (63, 336530), (70, 302877), (73, 290430), (90, 235571), (105, 201918), (126, 168265), (146, 145215), (210, 100959), (219, 96810), (315, 67306), (365, 58086), (438, 48405), (461, 45990), (511, 41490), (630, 33653), (657, 32270), (730, 29043), (922, 22995), (1022, 20745), (1095, 19362), (1314, 16135), (1383, 15330), (1533, 13830), (2190, 9681), (2305, 9198), (2555, 8298), (2766, 7665), (3066, 6915), (3227, 6570), (3285, 6454), (4149, 5110), (4599, 4610)]