21653240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{4549}}^1$

素因数の和:4584

約数の個数: 64

約数和(自身を含む): 58968000

約数和(自身を除く): 37314760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 68, 70, 85, 119, 136, 140, 170, 238, 280, 340, 476, 595, 680, 952, 1190, 2380, 4549, 4760, 9098, 18196, 22745, 31843, 36392, 45490, 63686, 77333, 90980, 127372, 154666, 159215, 181960, 254744, 309332, 318430, 386665, 541331, 618664, 636860, 773330, 1082662, 1273720, 1546660, 2165324, 2706655, 3093320, 4330648, 5413310, 10826620, 21653240]

約数ペア:

[(1, 21653240), (2, 10826620), (4, 5413310), (5, 4330648), (7, 3093320), (8, 2706655), (10, 2165324), (14, 1546660), (17, 1273720), (20, 1082662), (28, 773330), (34, 636860), (35, 618664), (40, 541331), (56, 386665), (68, 318430), (70, 309332), (85, 254744), (119, 181960), (136, 159215), (140, 154666), (170, 127372), (238, 90980), (280, 77333), (340, 63686), (476, 45490), (595, 36392), (680, 31843), (952, 22745), (1190, 18196), (2380, 9098), (4549, 4760)]