15209900

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{389}}^1$

素因数の和:443

約数の個数: 72

約数和(自身を含む): 36560160

約数和(自身を除く): 21350260

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 25, 34, 46, 50, 68, 85, 92, 100, 115, 170, 230, 340, 389, 391, 425, 460, 575, 778, 782, 850, 1150, 1556, 1564, 1700, 1945, 1955, 2300, 3890, 3910, 6613, 7780, 7820, 8947, 9725, 9775, 13226, 17894, 19450, 19550, 26452, 33065, 35788, 38900, 39100, 44735, 66130, 89470, 132260, 152099, 165325, 178940, 223675, 304198, 330650, 447350, 608396, 661300, 760495, 894700, 1520990, 3041980, 3802475, 7604950, 15209900]

約数ペア:

[(1, 15209900), (2, 7604950), (4, 3802475), (5, 3041980), (10, 1520990), (17, 894700), (20, 760495), (23, 661300), (25, 608396), (34, 447350), (46, 330650), (50, 304198), (68, 223675), (85, 178940), (92, 165325), (100, 152099), (115, 132260), (170, 89470), (230, 66130), (340, 44735), (389, 39100), (391, 38900), (425, 35788), (460, 33065), (575, 26452), (778, 19550), (782, 19450), (850, 17894), (1150, 13226), (1556, 9775), (1564, 9725), (1700, 8947), (1945, 7820), (1955, 7780), (2300, 6613), (3890, 3910)]