28912725

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{151}}^1$

素因数の和:227

約数の個数: 72

約数和(自身を含む): 55865472

約数和(自身を除く): 26952747

約数列:

[1, 3, 5, 9, 15, 23, 25, 37, 45, 69, 75, 111, 115, 151, 185, 207, 225, 333, 345, 453, 555, 575, 755, 851, 925, 1035, 1359, 1665, 1725, 2265, 2553, 2775, 3473, 3775, 4255, 5175, 5587, 6795, 7659, 8325, 10419, 11325, 12765, 16761, 17365, 21275, 27935, 31257, 33975, 38295, 50283, 52095, 63825, 83805, 86825, 128501, 139675, 156285, 191475, 251415, 260475, 385503, 419025, 642505, 781425, 1156509, 1257075, 1927515, 3212525, 5782545, 9637575, 28912725]

約数ペア:

[(1, 28912725), (3, 9637575), (5, 5782545), (9, 3212525), (15, 1927515), (23, 1257075), (25, 1156509), (37, 781425), (45, 642505), (69, 419025), (75, 385503), (111, 260475), (115, 251415), (151, 191475), (185, 156285), (207, 139675), (225, 128501), (333, 86825), (345, 83805), (453, 63825), (555, 52095), (575, 50283), (755, 38295), (851, 33975), (925, 31257), (1035, 27935), (1359, 21275), (1665, 17365), (1725, 16761), (2265, 12765), (2553, 11325), (2775, 10419), (3473, 8325), (3775, 7659), (4255, 6795), (5175, 5587)]