19243640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1609}}^1$

素因数の和:1656

約数の個数: 64

約数和(自身を含む): 48686400

約数和(自身を除く): 29442760

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 40, 46, 52, 65, 92, 104, 115, 130, 184, 230, 260, 299, 460, 520, 598, 920, 1196, 1495, 1609, 2392, 2990, 3218, 5980, 6436, 8045, 11960, 12872, 16090, 20917, 32180, 37007, 41834, 64360, 74014, 83668, 104585, 148028, 167336, 185035, 209170, 296056, 370070, 418340, 481091, 740140, 836680, 962182, 1480280, 1924364, 2405455, 3848728, 4810910, 9621820, 19243640]

約数ペア:

[(1, 19243640), (2, 9621820), (4, 4810910), (5, 3848728), (8, 2405455), (10, 1924364), (13, 1480280), (20, 962182), (23, 836680), (26, 740140), (40, 481091), (46, 418340), (52, 370070), (65, 296056), (92, 209170), (104, 185035), (115, 167336), (130, 148028), (184, 104585), (230, 83668), (260, 74014), (299, 64360), (460, 41834), (520, 37007), (598, 32180), (920, 20917), (1196, 16090), (1495, 12872), (1609, 11960), (2392, 8045), (2990, 6436), (3218, 5980)]