28601820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{719}}^1$

素因数の和:764

約数の個数: 144

約数和(自身を含む): 99066240

約数和(自身を除く): 70464420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 17, 18, 20, 26, 30, 34, 36, 39, 45, 51, 52, 60, 65, 68, 78, 85, 90, 102, 117, 130, 153, 156, 170, 180, 195, 204, 221, 234, 255, 260, 306, 340, 390, 442, 468, 510, 585, 612, 663, 719, 765, 780, 884, 1020, 1105, 1170, 1326, 1438, 1530, 1989, 2157, 2210, 2340, 2652, 2876, 3060, 3315, 3595, 3978, 4314, 4420, 6471, 6630, 7190, 7956, 8628, 9347, 9945, 10785, 12223, 12942, 13260, 14380, 18694, 19890, 21570, 24446, 25884, 28041, 32355, 36669, 37388, 39780, 43140, 46735, 48892, 56082, 61115, 64710, 73338, 84123, 93470, 110007, 112164, 122230, 129420, 140205, 146676, 158899, 168246, 183345, 186940, 220014, 244460, 280410, 317798, 336492, 366690, 420615, 440028, 476697, 550035, 560820, 635596, 733380, 794495, 841230, 953394, 1100070, 1430091, 1588990, 1682460, 1906788, 2200140, 2383485, 2860182, 3177980, 4766970, 5720364, 7150455, 9533940, 14300910, 28601820]

約数ペア:

[(1, 28601820), (2, 14300910), (3, 9533940), (4, 7150455), (5, 5720364), (6, 4766970), (9, 3177980), (10, 2860182), (12, 2383485), (13, 2200140), (15, 1906788), (17, 1682460), (18, 1588990), (20, 1430091), (26, 1100070), (30, 953394), (34, 841230), (36, 794495), (39, 733380), (45, 635596), (51, 560820), (52, 550035), (60, 476697), (65, 440028), (68, 420615), (78, 366690), (85, 336492), (90, 317798), (102, 280410), (117, 244460), (130, 220014), (153, 186940), (156, 183345), (170, 168246), (180, 158899), (195, 146676), (204, 140205), (221, 129420), (234, 122230), (255, 112164), (260, 110007), (306, 93470), (340, 84123), (390, 73338), (442, 64710), (468, 61115), (510, 56082), (585, 48892), (612, 46735), (663, 43140), (719, 39780), (765, 37388), (780, 36669), (884, 32355), (1020, 28041), (1105, 25884), (1170, 24446), (1326, 21570), (1438, 19890), (1530, 18694), (1989, 14380), (2157, 13260), (2210, 12942), (2340, 12223), (2652, 10785), (2876, 9945), (3060, 9347), (3315, 8628), (3595, 7956), (3978, 7190), (4314, 6630), (4420, 6471)]