81842175

素因数分解:

$3^2\times 5^2\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1$

素因数の和:233

約数の個数: 72

約数和(自身を含む): 152914320

約数和(自身を除く): 71072145

約数列:

[1, 3, 5, 9, 15, 25, 45, 61, 67, 75, 89, 183, 201, 225, 267, 305, 335, 445, 549, 603, 801, 915, 1005, 1335, 1525, 1675, 2225, 2745, 3015, 4005, 4087, 4575, 5025, 5429, 5963, 6675, 12261, 13725, 15075, 16287, 17889, 20025, 20435, 27145, 29815, 36783, 48861, 53667, 61305, 81435, 89445, 102175, 135725, 149075, 183915, 244305, 268335, 306525, 363743, 407175, 447225, 919575, 1091229, 1221525, 1341675, 1818715, 3273687, 5456145, 9093575, 16368435, 27280725, 81842175]

約数ペア:

[(1, 81842175), (3, 27280725), (5, 16368435), (9, 9093575), (15, 5456145), (25, 3273687), (45, 1818715), (61, 1341675), (67, 1221525), (75, 1091229), (89, 919575), (183, 447225), (201, 407175), (225, 363743), (267, 306525), (305, 268335), (335, 244305), (445, 183915), (549, 149075), (603, 135725), (801, 102175), (915, 89445), (1005, 81435), (1335, 61305), (1525, 53667), (1675, 48861), (2225, 36783), (2745, 29815), (3015, 27145), (4005, 20435), (4087, 20025), (4575, 17889), (5025, 16287), (5429, 15075), (5963, 13725), (6675, 12261)]