28909425

素因数分解:

$3^1\times 5^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:234

約数の個数: 48

約数和(自身を含む): 49818240

約数和(自身を除く): 20908815

約数列:

[1, 3, 5, 15, 25, 61, 71, 75, 89, 183, 213, 267, 305, 355, 445, 915, 1065, 1335, 1525, 1775, 2225, 4331, 4575, 5325, 5429, 6319, 6675, 12993, 16287, 18957, 21655, 27145, 31595, 64965, 81435, 94785, 108275, 135725, 157975, 324825, 385459, 407175, 473925, 1156377, 1927295, 5781885, 9636475, 28909425]

約数ペア:

[(1, 28909425), (3, 9636475), (5, 5781885), (15, 1927295), (25, 1156377), (61, 473925), (71, 407175), (75, 385459), (89, 324825), (183, 157975), (213, 135725), (267, 108275), (305, 94785), (355, 81435), (445, 64965), (915, 31595), (1065, 27145), (1335, 21655), (1525, 18957), (1775, 16287), (2225, 12993), (4331, 6675), (4575, 6319), (5325, 5429)]