87280020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{7949}}^1$

素因数の和:8025

約数の個数: 72

約数和(自身を含む): 269123400

約数和(自身を除く): 181843380

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 61, 90, 122, 180, 183, 244, 305, 366, 549, 610, 732, 915, 1098, 1220, 1830, 2196, 2745, 3660, 5490, 7949, 10980, 15898, 23847, 31796, 39745, 47694, 71541, 79490, 95388, 119235, 143082, 158980, 238470, 286164, 357705, 476940, 484889, 715410, 969778, 1430820, 1454667, 1939556, 2424445, 2909334, 4364001, 4848890, 5818668, 7273335, 8728002, 9697780, 14546670, 17456004, 21820005, 29093340, 43640010, 87280020]

約数ペア:

[(1, 87280020), (2, 43640010), (3, 29093340), (4, 21820005), (5, 17456004), (6, 14546670), (9, 9697780), (10, 8728002), (12, 7273335), (15, 5818668), (18, 4848890), (20, 4364001), (30, 2909334), (36, 2424445), (45, 1939556), (60, 1454667), (61, 1430820), (90, 969778), (122, 715410), (180, 484889), (183, 476940), (244, 357705), (305, 286164), (366, 238470), (549, 158980), (610, 143082), (732, 119235), (915, 95388), (1098, 79490), (1220, 71541), (1830, 47694), (2196, 39745), (2745, 31796), (3660, 23847), (5490, 15898), (7949, 10980)]