71428240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{397}}^1$

素因数の和:596

約数の個数: 80

約数和(自身を含む): 180332208

約数和(自身を除く): 108903968

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 173, 208, 260, 346, 397, 520, 692, 794, 865, 1040, 1384, 1588, 1730, 1985, 2249, 2768, 3176, 3460, 3970, 4498, 5161, 6352, 6920, 7940, 8996, 10322, 11245, 13840, 15880, 17992, 20644, 22490, 25805, 31760, 35984, 41288, 44980, 51610, 68681, 82576, 89960, 103220, 137362, 179920, 206440, 274724, 343405, 412880, 549448, 686810, 892853, 1098896, 1373620, 1785706, 2747240, 3571412, 4464265, 5494480, 7142824, 8928530, 14285648, 17857060, 35714120, 71428240]

約数ペア:

[(1, 71428240), (2, 35714120), (4, 17857060), (5, 14285648), (8, 8928530), (10, 7142824), (13, 5494480), (16, 4464265), (20, 3571412), (26, 2747240), (40, 1785706), (52, 1373620), (65, 1098896), (80, 892853), (104, 686810), (130, 549448), (173, 412880), (208, 343405), (260, 274724), (346, 206440), (397, 179920), (520, 137362), (692, 103220), (794, 89960), (865, 82576), (1040, 68681), (1384, 51610), (1588, 44980), (1730, 41288), (1985, 35984), (2249, 31760), (2768, 25805), (3176, 22490), (3460, 20644), (3970, 17992), (4498, 15880), (5161, 13840), (6352, 11245), (6920, 10322), (7940, 8996)]