1987380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{181}}^1$

素因数の和:257

約数の個数: 72

約数和(自身を含む): 6161064

約数和(自身を除く): 4173684

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 61, 90, 122, 180, 181, 183, 244, 305, 362, 366, 543, 549, 610, 724, 732, 905, 915, 1086, 1098, 1220, 1629, 1810, 1830, 2172, 2196, 2715, 2745, 3258, 3620, 3660, 5430, 5490, 6516, 8145, 10860, 10980, 11041, 16290, 22082, 32580, 33123, 44164, 55205, 66246, 99369, 110410, 132492, 165615, 198738, 220820, 331230, 397476, 496845, 662460, 993690, 1987380]

約数ペア:

[(1, 1987380), (2, 993690), (3, 662460), (4, 496845), (5, 397476), (6, 331230), (9, 220820), (10, 198738), (12, 165615), (15, 132492), (18, 110410), (20, 99369), (30, 66246), (36, 55205), (45, 44164), (60, 33123), (61, 32580), (90, 22082), (122, 16290), (180, 11041), (181, 10980), (183, 10860), (244, 8145), (305, 6516), (362, 5490), (366, 5430), (543, 3660), (549, 3620), (610, 3258), (724, 2745), (732, 2715), (905, 2196), (915, 2172), (1086, 1830), (1098, 1810), (1220, 1629)]