21364240

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{683}}^1$

素因数の和:736

約数の個数: 80

約数和(自身を含む): 54960768

約数和(自身を除く): 33596528

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 34, 40, 46, 68, 80, 85, 92, 115, 136, 170, 184, 230, 272, 340, 368, 391, 460, 680, 683, 782, 920, 1360, 1366, 1564, 1840, 1955, 2732, 3128, 3415, 3910, 5464, 6256, 6830, 7820, 10928, 11611, 13660, 15640, 15709, 23222, 27320, 31280, 31418, 46444, 54640, 58055, 62836, 78545, 92888, 116110, 125672, 157090, 185776, 232220, 251344, 267053, 314180, 464440, 534106, 628360, 928880, 1068212, 1256720, 1335265, 2136424, 2670530, 4272848, 5341060, 10682120, 21364240]

約数ペア:

[(1, 21364240), (2, 10682120), (4, 5341060), (5, 4272848), (8, 2670530), (10, 2136424), (16, 1335265), (17, 1256720), (20, 1068212), (23, 928880), (34, 628360), (40, 534106), (46, 464440), (68, 314180), (80, 267053), (85, 251344), (92, 232220), (115, 185776), (136, 157090), (170, 125672), (184, 116110), (230, 92888), (272, 78545), (340, 62836), (368, 58055), (391, 54640), (460, 46444), (680, 31418), (683, 31280), (782, 27320), (920, 23222), (1360, 15709), (1366, 15640), (1564, 13660), (1840, 11611), (1955, 10928), (2732, 7820), (3128, 6830), (3415, 6256), (3910, 5464)]