1987950420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{649657}}^1$

素因数の和:649689

約数の個数: 72

約数和(自身を含む): 6384838824

約数和(自身を除く): 4396888404

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 85, 90, 102, 153, 170, 180, 204, 255, 306, 340, 510, 612, 765, 1020, 1530, 3060, 649657, 1299314, 1948971, 2598628, 3248285, 3897942, 5846913, 6496570, 7795884, 9744855, 11044169, 11693826, 12993140, 19489710, 22088338, 23387652, 29234565, 33132507, 38979420, 44176676, 55220845, 58469130, 66265014, 99397521, 110441690, 116938260, 132530028, 165662535, 198795042, 220883380, 331325070, 397590084, 496987605, 662650140, 993975210, 1987950420]

約数ペア:

[(1, 1987950420), (2, 993975210), (3, 662650140), (4, 496987605), (5, 397590084), (6, 331325070), (9, 220883380), (10, 198795042), (12, 165662535), (15, 132530028), (17, 116938260), (18, 110441690), (20, 99397521), (30, 66265014), (34, 58469130), (36, 55220845), (45, 44176676), (51, 38979420), (60, 33132507), (68, 29234565), (85, 23387652), (90, 22088338), (102, 19489710), (153, 12993140), (170, 11693826), (180, 11044169), (204, 9744855), (255, 7795884), (306, 6496570), (340, 5846913), (510, 3897942), (612, 3248285), (765, 2598628), (1020, 1948971), (1530, 1299314), (3060, 649657)]