20487948

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{2153}}^1$

素因数の和:2234

約数の個数: 48

約数和(自身を含む): 52350816

約数和(自身を除く): 31862868

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 61, 78, 122, 156, 183, 244, 366, 732, 793, 1586, 2153, 2379, 3172, 4306, 4758, 6459, 8612, 9516, 12918, 25836, 27989, 55978, 83967, 111956, 131333, 167934, 262666, 335868, 393999, 525332, 787998, 1575996, 1707329, 3414658, 5121987, 6829316, 10243974, 20487948]

約数ペア:

[(1, 20487948), (2, 10243974), (3, 6829316), (4, 5121987), (6, 3414658), (12, 1707329), (13, 1575996), (26, 787998), (39, 525332), (52, 393999), (61, 335868), (78, 262666), (122, 167934), (156, 131333), (183, 111956), (244, 83967), (366, 55978), (732, 27989), (793, 25836), (1586, 12918), (2153, 9516), (2379, 8612), (3172, 6459), (4306, 4758)]