21013890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{11483}}^1$

素因数の和:11554

約数の個数: 32

約数和(自身を含む): 51264576

約数和(自身を除く): 30250686

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 61, 122, 183, 305, 366, 610, 915, 1830, 11483, 22966, 34449, 57415, 68898, 114830, 172245, 344490, 700463, 1400926, 2101389, 3502315, 4202778, 7004630, 10506945, 21013890]

約数ペア:

[(1, 21013890), (2, 10506945), (3, 7004630), (5, 4202778), (6, 3502315), (10, 2101389), (15, 1400926), (30, 700463), (61, 344490), (122, 172245), (183, 114830), (305, 68898), (366, 57415), (610, 34449), (915, 22966), (1830, 11483)]