21011450

素因数分解:

$2^1\times 5^2\times {\mathrm{61}}^1\times {\mathrm{83}}^2$

素因数の和:239

約数の個数: 36

約数和(自身を含む): 40206318

約数和(自身を除く): 19194868

約数列:

[1, 2, 5, 10, 25, 50, 61, 83, 122, 166, 305, 415, 610, 830, 1525, 2075, 3050, 4150, 5063, 6889, 10126, 13778, 25315, 34445, 50630, 68890, 126575, 172225, 253150, 344450, 420229, 840458, 2101145, 4202290, 10505725, 21011450]

約数ペア:

[(1, 21011450), (2, 10505725), (5, 4202290), (10, 2101145), (25, 840458), (50, 420229), (61, 344450), (83, 253150), (122, 172225), (166, 126575), (305, 68890), (415, 50630), (610, 34445), (830, 25315), (1525, 13778), (2075, 10126), (3050, 6889), (4150, 5063)]