19737770

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:231

約数の個数: 64

約数和(自身を含む): 41247360

約数和(自身を除く): 21509590

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 61, 65, 95, 122, 130, 131, 190, 247, 262, 305, 494, 610, 655, 793, 1159, 1235, 1310, 1586, 1703, 2318, 2470, 2489, 3406, 3965, 4978, 5795, 7930, 7991, 8515, 11590, 12445, 15067, 15982, 17030, 24890, 30134, 32357, 39955, 64714, 75335, 79910, 103883, 150670, 151829, 161785, 207766, 303658, 323570, 519415, 759145, 1038830, 1518290, 1973777, 3947554, 9868885, 19737770]

約数ペア:

[(1, 19737770), (2, 9868885), (5, 3947554), (10, 1973777), (13, 1518290), (19, 1038830), (26, 759145), (38, 519415), (61, 323570), (65, 303658), (95, 207766), (122, 161785), (130, 151829), (131, 150670), (190, 103883), (247, 79910), (262, 75335), (305, 64714), (494, 39955), (610, 32357), (655, 30134), (793, 24890), (1159, 17030), (1235, 15982), (1310, 15067), (1586, 12445), (1703, 11590), (2318, 8515), (2470, 7991), (2489, 7930), (3406, 5795), (3965, 4978)]