21873968

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{587}}^1$

素因数の和:749

約数の個数: 40

約数和(自身を含む): 45278352

約数和(自身を除く): 23404384

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 137, 272, 274, 548, 587, 1096, 1174, 2192, 2329, 2348, 4658, 4696, 9316, 9392, 9979, 18632, 19958, 37264, 39916, 79832, 80419, 159664, 160838, 321676, 643352, 1286704, 1367123, 2734246, 5468492, 10936984, 21873968]

約数ペア:

[(1, 21873968), (2, 10936984), (4, 5468492), (8, 2734246), (16, 1367123), (17, 1286704), (34, 643352), (68, 321676), (136, 160838), (137, 159664), (272, 80419), (274, 79832), (548, 39916), (587, 37264), (1096, 19958), (1174, 18632), (2192, 9979), (2329, 9392), (2348, 9316), (4658, 4696)]