18955908

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{271}}^1$

素因数の和:377

約数の個数: 72

約数和(自身を含む): 50494080

約数和(自身を除く): 31538172

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 58, 67, 87, 116, 134, 174, 201, 261, 268, 271, 348, 402, 522, 542, 603, 804, 813, 1044, 1084, 1206, 1626, 1943, 2412, 2439, 3252, 3886, 4878, 5829, 7772, 7859, 9756, 11658, 15718, 17487, 18157, 23316, 23577, 31436, 34974, 36314, 47154, 54471, 69948, 70731, 72628, 94308, 108942, 141462, 163413, 217884, 282924, 326826, 526553, 653652, 1053106, 1579659, 2106212, 3159318, 4738977, 6318636, 9477954, 18955908]

約数ペア:

[(1, 18955908), (2, 9477954), (3, 6318636), (4, 4738977), (6, 3159318), (9, 2106212), (12, 1579659), (18, 1053106), (29, 653652), (36, 526553), (58, 326826), (67, 282924), (87, 217884), (116, 163413), (134, 141462), (174, 108942), (201, 94308), (261, 72628), (268, 70731), (271, 69948), (348, 54471), (402, 47154), (522, 36314), (542, 34974), (603, 31436), (804, 23577), (813, 23316), (1044, 18157), (1084, 17487), (1206, 15718), (1626, 11658), (1943, 9756), (2412, 7859), (2439, 7772), (3252, 5829), (3886, 4878)]