21972512

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{509}}^1$

素因数の和:609

約数の個数: 48

約数和(自身を含む): 46267200

約数和(自身を除く): 24294688

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 71, 76, 142, 152, 284, 304, 509, 568, 608, 1018, 1136, 1349, 2036, 2272, 2698, 4072, 5396, 8144, 9671, 10792, 16288, 19342, 21584, 36139, 38684, 43168, 72278, 77368, 144556, 154736, 289112, 309472, 578224, 686641, 1156448, 1373282, 2746564, 5493128, 10986256, 21972512]

約数ペア:

[(1, 21972512), (2, 10986256), (4, 5493128), (8, 2746564), (16, 1373282), (19, 1156448), (32, 686641), (38, 578224), (71, 309472), (76, 289112), (142, 154736), (152, 144556), (284, 77368), (304, 72278), (509, 43168), (568, 38684), (608, 36139), (1018, 21584), (1136, 19342), (1349, 16288), (2036, 10792), (2272, 9671), (2698, 8144), (4072, 5396)]