20905320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{173}}^1$

素因数の和:259

約数の個数: 128

約数和(自身を含む): 67651200

約数和(自身を除く): 46745880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 53, 57, 60, 76, 95, 106, 114, 120, 152, 159, 173, 190, 212, 228, 265, 285, 318, 346, 380, 424, 456, 519, 530, 570, 636, 692, 760, 795, 865, 1007, 1038, 1060, 1140, 1272, 1384, 1590, 1730, 2014, 2076, 2120, 2280, 2595, 3021, 3180, 3287, 3460, 4028, 4152, 5035, 5190, 6042, 6360, 6574, 6920, 8056, 9169, 9861, 10070, 10380, 12084, 13148, 15105, 16435, 18338, 19722, 20140, 20760, 24168, 26296, 27507, 30210, 32870, 36676, 39444, 40280, 45845, 49305, 55014, 60420, 65740, 73352, 78888, 91690, 98610, 110028, 120840, 131480, 137535, 174211, 183380, 197220, 220056, 275070, 348422, 366760, 394440, 522633, 550140, 696844, 871055, 1045266, 1100280, 1393688, 1742110, 2090532, 2613165, 3484220, 4181064, 5226330, 6968440, 10452660, 20905320]

約数ペア:

[(1, 20905320), (2, 10452660), (3, 6968440), (4, 5226330), (5, 4181064), (6, 3484220), (8, 2613165), (10, 2090532), (12, 1742110), (15, 1393688), (19, 1100280), (20, 1045266), (24, 871055), (30, 696844), (38, 550140), (40, 522633), (53, 394440), (57, 366760), (60, 348422), (76, 275070), (95, 220056), (106, 197220), (114, 183380), (120, 174211), (152, 137535), (159, 131480), (173, 120840), (190, 110028), (212, 98610), (228, 91690), (265, 78888), (285, 73352), (318, 65740), (346, 60420), (380, 55014), (424, 49305), (456, 45845), (519, 40280), (530, 39444), (570, 36676), (636, 32870), (692, 30210), (760, 27507), (795, 26296), (865, 24168), (1007, 20760), (1038, 20140), (1060, 19722), (1140, 18338), (1272, 16435), (1384, 15105), (1590, 13148), (1730, 12084), (2014, 10380), (2076, 10070), (2120, 9861), (2280, 9169), (2595, 8056), (3021, 6920), (3180, 6574), (3287, 6360), (3460, 6042), (4028, 5190), (4152, 5035)]