21287650

素因数分解:

$2^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{173}}^1$

素因数の和:315

約数の個数: 48

約数和(自身を含む): 41943744

約数和(自身を除く): 20656094

約数列:

[1, 2, 5, 10, 23, 25, 46, 50, 107, 115, 173, 214, 230, 346, 535, 575, 865, 1070, 1150, 1730, 2461, 2675, 3979, 4325, 4922, 5350, 7958, 8650, 12305, 18511, 19895, 24610, 37022, 39790, 61525, 92555, 99475, 123050, 185110, 198950, 425753, 462775, 851506, 925550, 2128765, 4257530, 10643825, 21287650]

約数ペア:

[(1, 21287650), (2, 10643825), (5, 4257530), (10, 2128765), (23, 925550), (25, 851506), (46, 462775), (50, 425753), (107, 198950), (115, 185110), (173, 123050), (214, 99475), (230, 92555), (346, 61525), (535, 39790), (575, 37022), (865, 24610), (1070, 19895), (1150, 18511), (1730, 12305), (2461, 8650), (2675, 7958), (3979, 5350), (4325, 4922)]