20900760

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1$

素因数の和:225

約数の個数: 128

約数和(自身を含む): 67392000

約数和(自身を除く): 46491240

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 57, 60, 76, 89, 95, 103, 114, 120, 152, 178, 190, 206, 228, 267, 285, 309, 356, 380, 412, 445, 456, 515, 534, 570, 618, 712, 760, 824, 890, 1030, 1068, 1140, 1236, 1335, 1545, 1691, 1780, 1957, 2060, 2136, 2280, 2472, 2670, 3090, 3382, 3560, 3914, 4120, 5073, 5340, 5871, 6180, 6764, 7828, 8455, 9167, 9785, 10146, 10680, 11742, 12360, 13528, 15656, 16910, 18334, 19570, 20292, 23484, 25365, 27501, 29355, 33820, 36668, 39140, 40584, 45835, 46968, 50730, 55002, 58710, 67640, 73336, 78280, 91670, 101460, 110004, 117420, 137505, 174173, 183340, 202920, 220008, 234840, 275010, 348346, 366680, 522519, 550020, 696692, 870865, 1045038, 1100040, 1393384, 1741730, 2090076, 2612595, 3483460, 4180152, 5225190, 6966920, 10450380, 20900760]

約数ペア:

[(1, 20900760), (2, 10450380), (3, 6966920), (4, 5225190), (5, 4180152), (6, 3483460), (8, 2612595), (10, 2090076), (12, 1741730), (15, 1393384), (19, 1100040), (20, 1045038), (24, 870865), (30, 696692), (38, 550020), (40, 522519), (57, 366680), (60, 348346), (76, 275010), (89, 234840), (95, 220008), (103, 202920), (114, 183340), (120, 174173), (152, 137505), (178, 117420), (190, 110004), (206, 101460), (228, 91670), (267, 78280), (285, 73336), (309, 67640), (356, 58710), (380, 55002), (412, 50730), (445, 46968), (456, 45835), (515, 40584), (534, 39140), (570, 36668), (618, 33820), (712, 29355), (760, 27501), (824, 25365), (890, 23484), (1030, 20292), (1068, 19570), (1140, 18334), (1236, 16910), (1335, 15656), (1545, 13528), (1691, 12360), (1780, 11742), (1957, 10680), (2060, 10146), (2136, 9785), (2280, 9167), (2472, 8455), (2670, 7828), (3090, 6764), (3382, 6180), (3560, 5871), (3914, 5340), (4120, 5073)]