219970820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{2707}}^1$

素因数の和:2972

約数の個数: 48

約数和(自身を含む): 491339520

約数和(自身を除く): 271368700

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 239, 340, 478, 956, 1195, 2390, 2707, 4063, 4780, 5414, 8126, 10828, 13535, 16252, 20315, 27070, 40630, 46019, 54140, 81260, 92038, 184076, 230095, 460190, 646973, 920380, 1293946, 2587892, 3234865, 6469730, 10998541, 12939460, 21997082, 43994164, 54992705, 109985410, 219970820]

約数ペア:

[(1, 219970820), (2, 109985410), (4, 54992705), (5, 43994164), (10, 21997082), (17, 12939460), (20, 10998541), (34, 6469730), (68, 3234865), (85, 2587892), (170, 1293946), (239, 920380), (340, 646973), (478, 460190), (956, 230095), (1195, 184076), (2390, 92038), (2707, 81260), (4063, 54140), (4780, 46019), (5414, 40630), (8126, 27070), (10828, 20315), (13535, 16252)]