81987400

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{449}}^1$

素因数の和:559

約数の個数: 96

約数和(自身を含む): 210924000

約数和(自身を除く): 128936600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 83, 88, 100, 110, 166, 200, 220, 275, 332, 415, 440, 449, 550, 664, 830, 898, 913, 1100, 1660, 1796, 1826, 2075, 2200, 2245, 3320, 3592, 3652, 4150, 4490, 4565, 4939, 7304, 8300, 8980, 9130, 9878, 11225, 16600, 17960, 18260, 19756, 22450, 22825, 24695, 36520, 37267, 39512, 44900, 45650, 49390, 74534, 89800, 91300, 98780, 123475, 149068, 182600, 186335, 197560, 246950, 298136, 372670, 409937, 493900, 745340, 819874, 931675, 987800, 1490680, 1639748, 1863350, 2049685, 3279496, 3726700, 4099370, 7453400, 8198740, 10248425, 16397480, 20496850, 40993700, 81987400]

約数ペア:

[(1, 81987400), (2, 40993700), (4, 20496850), (5, 16397480), (8, 10248425), (10, 8198740), (11, 7453400), (20, 4099370), (22, 3726700), (25, 3279496), (40, 2049685), (44, 1863350), (50, 1639748), (55, 1490680), (83, 987800), (88, 931675), (100, 819874), (110, 745340), (166, 493900), (200, 409937), (220, 372670), (275, 298136), (332, 246950), (415, 197560), (440, 186335), (449, 182600), (550, 149068), (664, 123475), (830, 98780), (898, 91300), (913, 89800), (1100, 74534), (1660, 49390), (1796, 45650), (1826, 44900), (2075, 39512), (2200, 37267), (2245, 36520), (3320, 24695), (3592, 22825), (3652, 22450), (4150, 19756), (4490, 18260), (4565, 17960), (4939, 16600), (7304, 11225), (8300, 9878), (8980, 9130)]