19779885

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{659}}^1$

素因数の和:722

約数の個数: 48

約数和(自身を含む): 37065600

約数和(自身を除く): 17285715

約数列:

[1, 3, 5, 9, 15, 23, 29, 45, 69, 87, 115, 145, 207, 261, 345, 435, 659, 667, 1035, 1305, 1977, 2001, 3295, 3335, 5931, 6003, 9885, 10005, 15157, 19111, 29655, 30015, 45471, 57333, 75785, 95555, 136413, 171999, 227355, 286665, 439553, 682065, 859995, 1318659, 2197765, 3955977, 6593295, 19779885]

約数ペア:

[(1, 19779885), (3, 6593295), (5, 3955977), (9, 2197765), (15, 1318659), (23, 859995), (29, 682065), (45, 439553), (69, 286665), (87, 227355), (115, 171999), (145, 136413), (207, 95555), (261, 75785), (345, 57333), (435, 45471), (659, 30015), (667, 29655), (1035, 19111), (1305, 15157), (1977, 10005), (2001, 9885), (3295, 6003), (3335, 5931)]