18995580

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1213}}^1$

素因数の和:1260

約数の個数: 96

約数和(自身を含む): 61185600

約数和(自身を除く): 42190020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 29, 30, 36, 45, 54, 58, 60, 87, 90, 108, 116, 135, 145, 174, 180, 261, 270, 290, 348, 435, 522, 540, 580, 783, 870, 1044, 1213, 1305, 1566, 1740, 2426, 2610, 3132, 3639, 3915, 4852, 5220, 6065, 7278, 7830, 10917, 12130, 14556, 15660, 18195, 21834, 24260, 32751, 35177, 36390, 43668, 54585, 65502, 70354, 72780, 105531, 109170, 131004, 140708, 163755, 175885, 211062, 218340, 316593, 327510, 351770, 422124, 527655, 633186, 655020, 703540, 949779, 1055310, 1266372, 1582965, 1899558, 2110620, 3165930, 3799116, 4748895, 6331860, 9497790, 18995580]

約数ペア:

[(1, 18995580), (2, 9497790), (3, 6331860), (4, 4748895), (5, 3799116), (6, 3165930), (9, 2110620), (10, 1899558), (12, 1582965), (15, 1266372), (18, 1055310), (20, 949779), (27, 703540), (29, 655020), (30, 633186), (36, 527655), (45, 422124), (54, 351770), (58, 327510), (60, 316593), (87, 218340), (90, 211062), (108, 175885), (116, 163755), (135, 140708), (145, 131004), (174, 109170), (180, 105531), (261, 72780), (270, 70354), (290, 65502), (348, 54585), (435, 43668), (522, 36390), (540, 35177), (580, 32751), (783, 24260), (870, 21834), (1044, 18195), (1213, 15660), (1305, 14556), (1566, 12130), (1740, 10917), (2426, 7830), (2610, 7278), (3132, 6065), (3639, 5220), (3915, 4852)]