18863685

素因数分解:

$3^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{991}}^1$

素因数の和:1055

約数の個数: 40

約数和(自身を含む): 34569216

約数和(自身を除く): 15705531

約数列:

[1, 3, 5, 9, 15, 27, 45, 47, 81, 135, 141, 235, 405, 423, 705, 991, 1269, 2115, 2973, 3807, 4955, 6345, 8919, 14865, 19035, 26757, 44595, 46577, 80271, 133785, 139731, 232885, 401355, 419193, 698655, 1257579, 2095965, 3772737, 6287895, 18863685]

約数ペア:

[(1, 18863685), (3, 6287895), (5, 3772737), (9, 2095965), (15, 1257579), (27, 698655), (45, 419193), (47, 401355), (81, 232885), (135, 139731), (141, 133785), (235, 80271), (405, 46577), (423, 44595), (705, 26757), (991, 19035), (1269, 14865), (2115, 8919), (2973, 6345), (3807, 4955)]