77783775

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{271}}^1$

素因数の和:416

約数の個数: 48

約数和(自身を含む): 133562880

約数和(自身を除く): 55779105

約数列:

[1, 3, 5, 15, 25, 43, 75, 89, 129, 215, 267, 271, 445, 645, 813, 1075, 1335, 1355, 2225, 3225, 3827, 4065, 6675, 6775, 11481, 11653, 19135, 20325, 24119, 34959, 57405, 58265, 72357, 95675, 120595, 174795, 287025, 291325, 361785, 602975, 873975, 1037117, 1808925, 3111351, 5185585, 15556755, 25927925, 77783775]

約数ペア:

[(1, 77783775), (3, 25927925), (5, 15556755), (15, 5185585), (25, 3111351), (43, 1808925), (75, 1037117), (89, 873975), (129, 602975), (215, 361785), (267, 291325), (271, 287025), (445, 174795), (645, 120595), (813, 95675), (1075, 72357), (1335, 58265), (1355, 57405), (2225, 34959), (3225, 24119), (3827, 20325), (4065, 19135), (6675, 11653), (6775, 11481)]