20280780

素因数分解:

$2^2\times 3^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1$

素因数の和:147

約数の個数: 168

約数和(自身を含む): 69409872

約数和(自身を除く): 49129092

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 27, 30, 36, 39, 45, 52, 54, 60, 65, 78, 81, 90, 107, 108, 117, 130, 135, 156, 162, 180, 195, 214, 234, 243, 260, 270, 321, 324, 351, 390, 405, 428, 468, 486, 535, 540, 585, 642, 702, 729, 780, 810, 963, 972, 1053, 1070, 1170, 1215, 1284, 1391, 1404, 1458, 1605, 1620, 1755, 1926, 2106, 2140, 2340, 2430, 2782, 2889, 2916, 3159, 3210, 3510, 3645, 3852, 4173, 4212, 4815, 4860, 5265, 5564, 5778, 6318, 6420, 6955, 7020, 7290, 8346, 8667, 9477, 9630, 10530, 11556, 12519, 12636, 13910, 14445, 14580, 15795, 16692, 17334, 18954, 19260, 20865, 21060, 25038, 26001, 27820, 28890, 31590, 34668, 37557, 37908, 41730, 43335, 47385, 50076, 52002, 57780, 62595, 63180, 75114, 78003, 83460, 86670, 94770, 104004, 112671, 125190, 130005, 150228, 156006, 173340, 187785, 189540, 225342, 250380, 260010, 312012, 338013, 375570, 390015, 450684, 520020, 563355, 676026, 751140, 780030, 1014039, 1126710, 1352052, 1560060, 1690065, 2028078, 2253420, 3380130, 4056156, 5070195, 6760260, 10140390, 20280780]

約数ペア:

[(1, 20280780), (2, 10140390), (3, 6760260), (4, 5070195), (5, 4056156), (6, 3380130), (9, 2253420), (10, 2028078), (12, 1690065), (13, 1560060), (15, 1352052), (18, 1126710), (20, 1014039), (26, 780030), (27, 751140), (30, 676026), (36, 563355), (39, 520020), (45, 450684), (52, 390015), (54, 375570), (60, 338013), (65, 312012), (78, 260010), (81, 250380), (90, 225342), (107, 189540), (108, 187785), (117, 173340), (130, 156006), (135, 150228), (156, 130005), (162, 125190), (180, 112671), (195, 104004), (214, 94770), (234, 86670), (243, 83460), (260, 78003), (270, 75114), (321, 63180), (324, 62595), (351, 57780), (390, 52002), (405, 50076), (428, 47385), (468, 43335), (486, 41730), (535, 37908), (540, 37557), (585, 34668), (642, 31590), (702, 28890), (729, 27820), (780, 26001), (810, 25038), (963, 21060), (972, 20865), (1053, 19260), (1070, 18954), (1170, 17334), (1215, 16692), (1284, 15795), (1391, 14580), (1404, 14445), (1458, 13910), (1605, 12636), (1620, 12519), (1755, 11556), (1926, 10530), (2106, 9630), (2140, 9477), (2340, 8667), (2430, 8346), (2782, 7290), (2889, 7020), (2916, 6955), (3159, 6420), (3210, 6318), (3510, 5778), (3645, 5564), (3852, 5265), (4173, 4860), (4212, 4815)]