20397000

素因数分解:

$2^3\times 3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{523}}^1$

素因数の和:560

約数の個数: 128

約数和(自身を含む): 68664960

約数和(自身を除く): 48267960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 25, 26, 30, 39, 40, 50, 52, 60, 65, 75, 78, 100, 104, 120, 125, 130, 150, 156, 195, 200, 250, 260, 300, 312, 325, 375, 390, 500, 520, 523, 600, 650, 750, 780, 975, 1000, 1046, 1300, 1500, 1560, 1569, 1625, 1950, 2092, 2600, 2615, 3000, 3138, 3250, 3900, 4184, 4875, 5230, 6276, 6500, 6799, 7800, 7845, 9750, 10460, 12552, 13000, 13075, 13598, 15690, 19500, 20397, 20920, 26150, 27196, 31380, 33995, 39000, 39225, 40794, 52300, 54392, 62760, 65375, 67990, 78450, 81588, 101985, 104600, 130750, 135980, 156900, 163176, 169975, 196125, 203970, 261500, 271960, 313800, 339950, 392250, 407940, 509925, 523000, 679900, 784500, 815880, 849875, 1019850, 1359800, 1569000, 1699750, 2039700, 2549625, 3399500, 4079400, 5099250, 6799000, 10198500, 20397000]

約数ペア:

[(1, 20397000), (2, 10198500), (3, 6799000), (4, 5099250), (5, 4079400), (6, 3399500), (8, 2549625), (10, 2039700), (12, 1699750), (13, 1569000), (15, 1359800), (20, 1019850), (24, 849875), (25, 815880), (26, 784500), (30, 679900), (39, 523000), (40, 509925), (50, 407940), (52, 392250), (60, 339950), (65, 313800), (75, 271960), (78, 261500), (100, 203970), (104, 196125), (120, 169975), (125, 163176), (130, 156900), (150, 135980), (156, 130750), (195, 104600), (200, 101985), (250, 81588), (260, 78450), (300, 67990), (312, 65375), (325, 62760), (375, 54392), (390, 52300), (500, 40794), (520, 39225), (523, 39000), (600, 33995), (650, 31380), (750, 27196), (780, 26150), (975, 20920), (1000, 20397), (1046, 19500), (1300, 15690), (1500, 13598), (1560, 13075), (1569, 13000), (1625, 12552), (1950, 10460), (2092, 9750), (2600, 7845), (2615, 7800), (3000, 6799), (3138, 6500), (3250, 6276), (3900, 5230), (4184, 4875)]