21976010

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:220

約数の個数: 64

約数和(自身を含む): 47520000

約数和(自身を除く): 25543990

約数列:

[1, 2, 5, 7, 10, 14, 35, 43, 49, 70, 86, 98, 149, 215, 245, 298, 301, 343, 430, 490, 602, 686, 745, 1043, 1490, 1505, 1715, 2086, 2107, 3010, 3430, 4214, 5215, 6407, 7301, 10430, 10535, 12814, 14602, 14749, 21070, 29498, 32035, 36505, 44849, 51107, 64070, 73010, 73745, 89698, 102214, 147490, 224245, 255535, 313943, 448490, 511070, 627886, 1569715, 2197601, 3139430, 4395202, 10988005, 21976010]

約数ペア:

[(1, 21976010), (2, 10988005), (5, 4395202), (7, 3139430), (10, 2197601), (14, 1569715), (35, 627886), (43, 511070), (49, 448490), (70, 313943), (86, 255535), (98, 224245), (149, 147490), (215, 102214), (245, 89698), (298, 73745), (301, 73010), (343, 64070), (430, 51107), (490, 44849), (602, 36505), (686, 32035), (745, 29498), (1043, 21070), (1490, 14749), (1505, 14602), (1715, 12814), (2086, 10535), (2107, 10430), (3010, 7301), (3430, 6407), (4214, 5215)]