2427920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:144

約数の個数: 80

約数和(自身を含む): 6428160

約数和(自身を除く): 4000240

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 40, 44, 55, 62, 80, 88, 89, 110, 124, 155, 176, 178, 220, 248, 310, 341, 356, 440, 445, 496, 620, 682, 712, 880, 890, 979, 1240, 1364, 1424, 1705, 1780, 1958, 2480, 2728, 2759, 3410, 3560, 3916, 4895, 5456, 5518, 6820, 7120, 7832, 9790, 11036, 13640, 13795, 15664, 19580, 22072, 27280, 27590, 30349, 39160, 44144, 55180, 60698, 78320, 110360, 121396, 151745, 220720, 242792, 303490, 485584, 606980, 1213960, 2427920]

約数ペア:

[(1, 2427920), (2, 1213960), (4, 606980), (5, 485584), (8, 303490), (10, 242792), (11, 220720), (16, 151745), (20, 121396), (22, 110360), (31, 78320), (40, 60698), (44, 55180), (55, 44144), (62, 39160), (80, 30349), (88, 27590), (89, 27280), (110, 22072), (124, 19580), (155, 15664), (176, 13795), (178, 13640), (220, 11036), (248, 9790), (310, 7832), (341, 7120), (356, 6820), (440, 5518), (445, 5456), (496, 4895), (620, 3916), (682, 3560), (712, 3410), (880, 2759), (890, 2728), (979, 2480), (1240, 1958), (1364, 1780), (1424, 1705)]