21017100

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{317}}^1$

素因数の和:364

約数の個数: 144

約数和(自身を含む): 69558048

約数和(自身を除く): 48540948

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 17, 20, 25, 26, 30, 34, 39, 50, 51, 52, 60, 65, 68, 75, 78, 85, 100, 102, 130, 150, 156, 170, 195, 204, 221, 255, 260, 300, 317, 325, 340, 390, 425, 442, 510, 634, 650, 663, 780, 850, 884, 951, 975, 1020, 1105, 1268, 1275, 1300, 1326, 1585, 1700, 1902, 1950, 2210, 2550, 2652, 3170, 3315, 3804, 3900, 4121, 4420, 4755, 5100, 5389, 5525, 6340, 6630, 7925, 8242, 9510, 10778, 11050, 12363, 13260, 15850, 16167, 16484, 16575, 19020, 20605, 21556, 22100, 23775, 24726, 26945, 31700, 32334, 33150, 41210, 47550, 49452, 53890, 61815, 64668, 66300, 70057, 80835, 82420, 95100, 103025, 107780, 123630, 134725, 140114, 161670, 206050, 210171, 247260, 269450, 280228, 309075, 323340, 350285, 404175, 412100, 420342, 538900, 618150, 700570, 808350, 840684, 1050855, 1236300, 1401140, 1616700, 1751425, 2101710, 3502850, 4203420, 5254275, 7005700, 10508550, 21017100]

約数ペア:

[(1, 21017100), (2, 10508550), (3, 7005700), (4, 5254275), (5, 4203420), (6, 3502850), (10, 2101710), (12, 1751425), (13, 1616700), (15, 1401140), (17, 1236300), (20, 1050855), (25, 840684), (26, 808350), (30, 700570), (34, 618150), (39, 538900), (50, 420342), (51, 412100), (52, 404175), (60, 350285), (65, 323340), (68, 309075), (75, 280228), (78, 269450), (85, 247260), (100, 210171), (102, 206050), (130, 161670), (150, 140114), (156, 134725), (170, 123630), (195, 107780), (204, 103025), (221, 95100), (255, 82420), (260, 80835), (300, 70057), (317, 66300), (325, 64668), (340, 61815), (390, 53890), (425, 49452), (442, 47550), (510, 41210), (634, 33150), (650, 32334), (663, 31700), (780, 26945), (850, 24726), (884, 23775), (951, 22100), (975, 21556), (1020, 20605), (1105, 19020), (1268, 16575), (1275, 16484), (1300, 16167), (1326, 15850), (1585, 13260), (1700, 12363), (1902, 11050), (1950, 10778), (2210, 9510), (2550, 8242), (2652, 7925), (3170, 6630), (3315, 6340), (3804, 5525), (3900, 5389), (4121, 5100), (4420, 4755)]