21470388

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^2\times {\mathrm{41}}^1\times {\mathrm{151}}^1$

素因数の和:233

約数の個数: 72

約数和(自身を含む): 54876864

約数和(自身を除く): 33406476

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 41, 51, 68, 82, 102, 123, 151, 164, 204, 246, 289, 302, 453, 492, 578, 604, 697, 867, 906, 1156, 1394, 1734, 1812, 2091, 2567, 2788, 3468, 4182, 5134, 6191, 7701, 8364, 10268, 11849, 12382, 15402, 18573, 23698, 24764, 30804, 35547, 37146, 43639, 47396, 71094, 74292, 87278, 105247, 130917, 142188, 174556, 210494, 261834, 315741, 420988, 523668, 631482, 1262964, 1789199, 3578398, 5367597, 7156796, 10735194, 21470388]

約数ペア:

[(1, 21470388), (2, 10735194), (3, 7156796), (4, 5367597), (6, 3578398), (12, 1789199), (17, 1262964), (34, 631482), (41, 523668), (51, 420988), (68, 315741), (82, 261834), (102, 210494), (123, 174556), (151, 142188), (164, 130917), (204, 105247), (246, 87278), (289, 74292), (302, 71094), (453, 47396), (492, 43639), (578, 37146), (604, 35547), (697, 30804), (867, 24764), (906, 23698), (1156, 18573), (1394, 15402), (1734, 12382), (1812, 11849), (2091, 10268), (2567, 8364), (2788, 7701), (3468, 6191), (4182, 5134)]