28921140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:190

約数の個数: 144

約数和(自身を含む): 93090816

約数和(自身を除く): 64169676

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 71, 73, 90, 93, 124, 142, 146, 155, 180, 186, 213, 219, 279, 284, 292, 310, 355, 365, 372, 426, 438, 465, 558, 620, 639, 657, 710, 730, 852, 876, 930, 1065, 1095, 1116, 1278, 1314, 1395, 1420, 1460, 1860, 2130, 2190, 2201, 2263, 2556, 2628, 2790, 3195, 3285, 4260, 4380, 4402, 4526, 5183, 5580, 6390, 6570, 6603, 6789, 8804, 9052, 10366, 11005, 11315, 12780, 13140, 13206, 13578, 15549, 19809, 20367, 20732, 22010, 22630, 25915, 26412, 27156, 31098, 33015, 33945, 39618, 40734, 44020, 45260, 46647, 51830, 62196, 66030, 67890, 77745, 79236, 81468, 93294, 99045, 101835, 103660, 132060, 135780, 155490, 160673, 186588, 198090, 203670, 233235, 310980, 321346, 396180, 407340, 466470, 482019, 642692, 803365, 932940, 964038, 1446057, 1606730, 1928076, 2410095, 2892114, 3213460, 4820190, 5784228, 7230285, 9640380, 14460570, 28921140]

約数ペア:

[(1, 28921140), (2, 14460570), (3, 9640380), (4, 7230285), (5, 5784228), (6, 4820190), (9, 3213460), (10, 2892114), (12, 2410095), (15, 1928076), (18, 1606730), (20, 1446057), (30, 964038), (31, 932940), (36, 803365), (45, 642692), (60, 482019), (62, 466470), (71, 407340), (73, 396180), (90, 321346), (93, 310980), (124, 233235), (142, 203670), (146, 198090), (155, 186588), (180, 160673), (186, 155490), (213, 135780), (219, 132060), (279, 103660), (284, 101835), (292, 99045), (310, 93294), (355, 81468), (365, 79236), (372, 77745), (426, 67890), (438, 66030), (465, 62196), (558, 51830), (620, 46647), (639, 45260), (657, 44020), (710, 40734), (730, 39618), (852, 33945), (876, 33015), (930, 31098), (1065, 27156), (1095, 26412), (1116, 25915), (1278, 22630), (1314, 22010), (1395, 20732), (1420, 20367), (1460, 19809), (1860, 15549), (2130, 13578), (2190, 13206), (2201, 13140), (2263, 12780), (2556, 11315), (2628, 11005), (2790, 10366), (3195, 9052), (3285, 8804), (4260, 6789), (4380, 6603), (4402, 6570), (4526, 6390), (5183, 5580)]