20819760

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6673}}^1$

素因数の和:6702

約数の個数: 80

約数和(自身を含む): 69516384

約数和(自身を除く): 48696624

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 6673, 13346, 20019, 26692, 33365, 40038, 53384, 66730, 80076, 86749, 100095, 106768, 133460, 160152, 173498, 200190, 260247, 266920, 320304, 346996, 400380, 433745, 520494, 533840, 693992, 800760, 867490, 1040988, 1301235, 1387984, 1601520, 1734980, 2081976, 2602470, 3469960, 4163952, 5204940, 6939920, 10409880, 20819760]

約数ペア:

[(1, 20819760), (2, 10409880), (3, 6939920), (4, 5204940), (5, 4163952), (6, 3469960), (8, 2602470), (10, 2081976), (12, 1734980), (13, 1601520), (15, 1387984), (16, 1301235), (20, 1040988), (24, 867490), (26, 800760), (30, 693992), (39, 533840), (40, 520494), (48, 433745), (52, 400380), (60, 346996), (65, 320304), (78, 266920), (80, 260247), (104, 200190), (120, 173498), (130, 160152), (156, 133460), (195, 106768), (208, 100095), (240, 86749), (260, 80076), (312, 66730), (390, 53384), (520, 40038), (624, 33365), (780, 26692), (1040, 20019), (1560, 13346), (3120, 6673)]