21918390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1307}}^1$

素因数の和:1373

約数の個数: 64

約数和(自身を含む): 58012416

約数和(自身を除く): 36094026

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 43, 65, 78, 86, 129, 130, 195, 215, 258, 390, 430, 559, 645, 1118, 1290, 1307, 1677, 2614, 2795, 3354, 3921, 5590, 6535, 7842, 8385, 13070, 16770, 16991, 19605, 33982, 39210, 50973, 56201, 84955, 101946, 112402, 168603, 169910, 254865, 281005, 337206, 509730, 562010, 730613, 843015, 1461226, 1686030, 2191839, 3653065, 4383678, 7306130, 10959195, 21918390]

約数ペア:

[(1, 21918390), (2, 10959195), (3, 7306130), (5, 4383678), (6, 3653065), (10, 2191839), (13, 1686030), (15, 1461226), (26, 843015), (30, 730613), (39, 562010), (43, 509730), (65, 337206), (78, 281005), (86, 254865), (129, 169910), (130, 168603), (195, 112402), (215, 101946), (258, 84955), (390, 56201), (430, 50973), (559, 39210), (645, 33982), (1118, 19605), (1290, 16991), (1307, 16770), (1677, 13070), (2614, 8385), (2795, 7842), (3354, 6535), (3921, 5590)]