21690840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{271}}^1$

素因数の和:337

約数の個数: 128

約数和(自身を含む): 70502400

約数和(自身を除く): 48811560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 29, 30, 40, 46, 58, 60, 69, 87, 92, 115, 116, 120, 138, 145, 174, 184, 230, 232, 271, 276, 290, 345, 348, 435, 460, 542, 552, 580, 667, 690, 696, 813, 870, 920, 1084, 1160, 1334, 1355, 1380, 1626, 1740, 2001, 2168, 2668, 2710, 2760, 3252, 3335, 3480, 4002, 4065, 5336, 5420, 6233, 6504, 6670, 7859, 8004, 8130, 10005, 10840, 12466, 13340, 15718, 16008, 16260, 18699, 20010, 23577, 24932, 26680, 31165, 31436, 32520, 37398, 39295, 40020, 47154, 49864, 62330, 62872, 74796, 78590, 80040, 93495, 94308, 117885, 124660, 149592, 157180, 180757, 186990, 188616, 235770, 249320, 314360, 361514, 373980, 471540, 542271, 723028, 747960, 903785, 943080, 1084542, 1446056, 1807570, 2169084, 2711355, 3615140, 4338168, 5422710, 7230280, 10845420, 21690840]

約数ペア:

[(1, 21690840), (2, 10845420), (3, 7230280), (4, 5422710), (5, 4338168), (6, 3615140), (8, 2711355), (10, 2169084), (12, 1807570), (15, 1446056), (20, 1084542), (23, 943080), (24, 903785), (29, 747960), (30, 723028), (40, 542271), (46, 471540), (58, 373980), (60, 361514), (69, 314360), (87, 249320), (92, 235770), (115, 188616), (116, 186990), (120, 180757), (138, 157180), (145, 149592), (174, 124660), (184, 117885), (230, 94308), (232, 93495), (271, 80040), (276, 78590), (290, 74796), (345, 62872), (348, 62330), (435, 49864), (460, 47154), (542, 40020), (552, 39295), (580, 37398), (667, 32520), (690, 31436), (696, 31165), (813, 26680), (870, 24932), (920, 23577), (1084, 20010), (1160, 18699), (1334, 16260), (1355, 16008), (1380, 15718), (1626, 13340), (1740, 12466), (2001, 10840), (2168, 10005), (2668, 8130), (2710, 8004), (2760, 7859), (3252, 6670), (3335, 6504), (3480, 6233), (4002, 5420), (4065, 5336)]