216295020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{19699}}^1$

素因数の和:19775

約数の個数: 72

約数和(自身を含む): 666884400

約数和(自身を除く): 450589380

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, 10980, 19699, 39398, 59097, 78796, 98495, 118194, 177291, 196990, 236388, 295485, 354582, 393980, 590970, 709164, 886455, 1181940, 1201639, 1772910, 2403278, 3545820, 3604917, 4806556, 6008195, 7209834, 10814751, 12016390, 14419668, 18024585, 21629502, 24032780, 36049170, 43259004, 54073755, 72098340, 108147510, 216295020]

約数ペア:

[(1, 216295020), (2, 108147510), (3, 72098340), (4, 54073755), (5, 43259004), (6, 36049170), (9, 24032780), (10, 21629502), (12, 18024585), (15, 14419668), (18, 12016390), (20, 10814751), (30, 7209834), (36, 6008195), (45, 4806556), (60, 3604917), (61, 3545820), (90, 2403278), (122, 1772910), (180, 1201639), (183, 1181940), (244, 886455), (305, 709164), (366, 590970), (549, 393980), (610, 354582), (732, 295485), (915, 236388), (1098, 196990), (1220, 177291), (1830, 118194), (2196, 98495), (2745, 78796), (3660, 59097), (5490, 39398), (10980, 19699)]