28690220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{6491}}^1$

素因数の和:6530

約数の個数: 48

約数和(自身を含む): 68711328

約数和(自身を除く): 40021108

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4420, 6491, 12982, 25964, 32455, 64910, 84383, 110347, 129820, 168766, 220694, 337532, 421915, 441388, 551735, 843830, 1103470, 1434511, 1687660, 2206940, 2869022, 5738044, 7172555, 14345110, 28690220]

約数ペア:

[(1, 28690220), (2, 14345110), (4, 7172555), (5, 5738044), (10, 2869022), (13, 2206940), (17, 1687660), (20, 1434511), (26, 1103470), (34, 843830), (52, 551735), (65, 441388), (68, 421915), (85, 337532), (130, 220694), (170, 168766), (221, 129820), (260, 110347), (340, 84383), (442, 64910), (884, 32455), (1105, 25964), (2210, 12982), (4420, 6491)]