19957660996

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{252667}}^1$

素因数の和:252729

約数の個数: 72

約数和(自身を含む): 45164910336

約数和(自身を除く): 25207249340

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 31, 49, 52, 62, 91, 98, 124, 182, 196, 217, 364, 403, 434, 637, 806, 868, 1274, 1519, 1612, 2548, 2821, 3038, 5642, 6076, 11284, 19747, 39494, 78988, 252667, 505334, 1010668, 1768669, 3284671, 3537338, 6569342, 7074676, 7832677, 12380683, 13138684, 15665354, 22992697, 24761366, 31330708, 45985394, 49522732, 54828739, 91970788, 101824801, 109657478, 160948879, 203649602, 219314956, 321897758, 383801173, 407299204, 643795516, 712773607, 767602346, 1425547214, 1535204692, 2851094428, 4989415249, 9978830498, 19957660996]

約数ペア:

[(1, 19957660996), (2, 9978830498), (4, 4989415249), (7, 2851094428), (13, 1535204692), (14, 1425547214), (26, 767602346), (28, 712773607), (31, 643795516), (49, 407299204), (52, 383801173), (62, 321897758), (91, 219314956), (98, 203649602), (124, 160948879), (182, 109657478), (196, 101824801), (217, 91970788), (364, 54828739), (403, 49522732), (434, 45985394), (637, 31330708), (806, 24761366), (868, 22992697), (1274, 15665354), (1519, 13138684), (1612, 12380683), (2548, 7832677), (2821, 7074676), (3038, 6569342), (5642, 3537338), (6076, 3284671), (11284, 1768669), (19747, 1010668), (39494, 505334), (78988, 252667)]