28638280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{97}}^1$

素因数の和:191

約数の個数: 96

約数和(自身を含む): 72729720

約数和(自身を除く): 44091440

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 61, 88, 97, 110, 121, 122, 194, 220, 242, 244, 305, 388, 440, 484, 485, 488, 605, 610, 671, 776, 968, 970, 1067, 1210, 1220, 1342, 1940, 2134, 2420, 2440, 2684, 3355, 3880, 4268, 4840, 5335, 5368, 5917, 6710, 7381, 8536, 10670, 11737, 11834, 13420, 14762, 21340, 23474, 23668, 26840, 29524, 29585, 36905, 42680, 46948, 47336, 58685, 59048, 59170, 65087, 73810, 93896, 117370, 118340, 130174, 147620, 234740, 236680, 260348, 295240, 325435, 469480, 520696, 650870, 715957, 1301740, 1431914, 2603480, 2863828, 3579785, 5727656, 7159570, 14319140, 28638280]

約数ペア:

[(1, 28638280), (2, 14319140), (4, 7159570), (5, 5727656), (8, 3579785), (10, 2863828), (11, 2603480), (20, 1431914), (22, 1301740), (40, 715957), (44, 650870), (55, 520696), (61, 469480), (88, 325435), (97, 295240), (110, 260348), (121, 236680), (122, 234740), (194, 147620), (220, 130174), (242, 118340), (244, 117370), (305, 93896), (388, 73810), (440, 65087), (484, 59170), (485, 59048), (488, 58685), (605, 47336), (610, 46948), (671, 42680), (776, 36905), (968, 29585), (970, 29524), (1067, 26840), (1210, 23668), (1220, 23474), (1342, 21340), (1940, 14762), (2134, 13420), (2420, 11834), (2440, 11737), (2684, 10670), (3355, 8536), (3880, 7381), (4268, 6710), (4840, 5917), (5335, 5368)]