1213960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:142

約数の個数: 64

約数和(自身を含む): 3110400

約数和(自身を除く): 1896440

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 89, 110, 124, 155, 178, 220, 248, 310, 341, 356, 440, 445, 620, 682, 712, 890, 979, 1240, 1364, 1705, 1780, 1958, 2728, 2759, 3410, 3560, 3916, 4895, 5518, 6820, 7832, 9790, 11036, 13640, 13795, 19580, 22072, 27590, 30349, 39160, 55180, 60698, 110360, 121396, 151745, 242792, 303490, 606980, 1213960]

約数ペア:

[(1, 1213960), (2, 606980), (4, 303490), (5, 242792), (8, 151745), (10, 121396), (11, 110360), (20, 60698), (22, 55180), (31, 39160), (40, 30349), (44, 27590), (55, 22072), (62, 19580), (88, 13795), (89, 13640), (110, 11036), (124, 9790), (155, 7832), (178, 6820), (220, 5518), (248, 4895), (310, 3916), (341, 3560), (356, 3410), (440, 2759), (445, 2728), (620, 1958), (682, 1780), (712, 1705), (890, 1364), (979, 1240)]