8320400

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:121

約数の個数: 120

約数和(自身を含む): 22879488

約数和(自身を除く): 14559088

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 31, 40, 44, 50, 55, 61, 62, 80, 88, 100, 110, 122, 124, 155, 176, 200, 220, 244, 248, 275, 305, 310, 341, 400, 440, 488, 496, 550, 610, 620, 671, 682, 775, 880, 976, 1100, 1220, 1240, 1342, 1364, 1525, 1550, 1705, 1891, 2200, 2440, 2480, 2684, 2728, 3050, 3100, 3355, 3410, 3782, 4400, 4880, 5368, 5456, 6100, 6200, 6710, 6820, 7564, 8525, 9455, 10736, 12200, 12400, 13420, 13640, 15128, 16775, 17050, 18910, 20801, 24400, 26840, 27280, 30256, 33550, 34100, 37820, 41602, 47275, 53680, 67100, 68200, 75640, 83204, 94550, 104005, 134200, 136400, 151280, 166408, 189100, 208010, 268400, 332816, 378200, 416020, 520025, 756400, 832040, 1040050, 1664080, 2080100, 4160200, 8320400]

約数ペア:

[(1, 8320400), (2, 4160200), (4, 2080100), (5, 1664080), (8, 1040050), (10, 832040), (11, 756400), (16, 520025), (20, 416020), (22, 378200), (25, 332816), (31, 268400), (40, 208010), (44, 189100), (50, 166408), (55, 151280), (61, 136400), (62, 134200), (80, 104005), (88, 94550), (100, 83204), (110, 75640), (122, 68200), (124, 67100), (155, 53680), (176, 47275), (200, 41602), (220, 37820), (244, 34100), (248, 33550), (275, 30256), (305, 27280), (310, 26840), (341, 24400), (400, 20801), (440, 18910), (488, 17050), (496, 16775), (550, 15128), (610, 13640), (620, 13420), (671, 12400), (682, 12200), (775, 10736), (880, 9455), (976, 8525), (1100, 7564), (1220, 6820), (1240, 6710), (1342, 6200), (1364, 6100), (1525, 5456), (1550, 5368), (1705, 4880), (1891, 4400), (2200, 3782), (2440, 3410), (2480, 3355), (2684, 3100), (2728, 3050)]