1991371970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{503}}^1\times {\mathrm{2459}}^1$

素因数の和:2999

約数の個数: 64

約数和(自身を含む): 4284887040

約数和(自身を除く): 2293515070

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 70, 115, 161, 230, 322, 503, 805, 1006, 1610, 2459, 2515, 3521, 4918, 5030, 7042, 11569, 12295, 17213, 17605, 23138, 24590, 34426, 35210, 56557, 57845, 80983, 86065, 113114, 115690, 161966, 172130, 282785, 395899, 404915, 565570, 791798, 809830, 1236877, 1979495, 2473754, 3958990, 6184385, 8658139, 12368770, 17316278, 28448171, 43290695, 56896342, 86581390, 142240855, 199137197, 284481710, 398274394, 995685985, 1991371970]

約数ペア:

[(1, 1991371970), (2, 995685985), (5, 398274394), (7, 284481710), (10, 199137197), (14, 142240855), (23, 86581390), (35, 56896342), (46, 43290695), (70, 28448171), (115, 17316278), (161, 12368770), (230, 8658139), (322, 6184385), (503, 3958990), (805, 2473754), (1006, 1979495), (1610, 1236877), (2459, 809830), (2515, 791798), (3521, 565570), (4918, 404915), (5030, 395899), (7042, 282785), (11569, 172130), (12295, 161966), (17213, 115690), (17605, 113114), (23138, 86065), (24590, 80983), (34426, 57845), (35210, 56557)]