13212940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{571}}^1$

素因数の和:682

約数の個数: 48

約数和(自身を含む): 30270240

約数和(自身を除く): 17057300

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 89, 130, 178, 260, 356, 445, 571, 890, 1142, 1157, 1780, 2284, 2314, 2855, 4628, 5710, 5785, 7423, 11420, 11570, 14846, 23140, 29692, 37115, 50819, 74230, 101638, 148460, 203276, 254095, 508190, 660647, 1016380, 1321294, 2642588, 3303235, 6606470, 13212940]

約数ペア:

[(1, 13212940), (2, 6606470), (4, 3303235), (5, 2642588), (10, 1321294), (13, 1016380), (20, 660647), (26, 508190), (52, 254095), (65, 203276), (89, 148460), (130, 101638), (178, 74230), (260, 50819), (356, 37115), (445, 29692), (571, 23140), (890, 14846), (1142, 11570), (1157, 11420), (1780, 7423), (2284, 5785), (2314, 5710), (2855, 4628)]