31979025

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^2\times {\mathrm{29}}^2$

素因数の和:100

約数の個数: 81

約数和(自身を含む): 64235379

約数和(自身を除く): 32256354

約数列:

[1, 3, 5, 9, 13, 15, 25, 29, 39, 45, 65, 75, 87, 117, 145, 169, 195, 225, 261, 325, 377, 435, 507, 585, 725, 841, 845, 975, 1131, 1305, 1521, 1885, 2175, 2523, 2535, 2925, 3393, 4205, 4225, 4901, 5655, 6525, 7569, 7605, 9425, 10933, 12615, 12675, 14703, 16965, 21025, 24505, 28275, 32799, 37845, 38025, 44109, 54665, 63075, 73515, 84825, 98397, 122525, 142129, 163995, 189225, 220545, 273325, 367575, 426387, 491985, 710645, 819975, 1102725, 1279161, 2131935, 2459925, 3553225, 6395805, 10659675, 31979025]

約数ペア:

[(1, 31979025), (3, 10659675), (5, 6395805), (9, 3553225), (13, 2459925), (15, 2131935), (25, 1279161), (29, 1102725), (39, 819975), (45, 710645), (65, 491985), (75, 426387), (87, 367575), (117, 273325), (145, 220545), (169, 189225), (195, 163995), (225, 142129), (261, 122525), (325, 98397), (377, 84825), (435, 73515), (507, 63075), (585, 54665), (725, 44109), (841, 38025), (845, 37845), (975, 32799), (1131, 28275), (1305, 24505), (1521, 21025), (1885, 16965), (2175, 14703), (2523, 12675), (2535, 12615), (2925, 10933), (3393, 9425), (4205, 7605), (4225, 7569), (4901, 6525)]