21287070

素因数分解:

$2^1\times 3^3\times 5^1\times 7^2\times {\mathrm{1609}}^1$

素因数の和:1639

約数の個数: 96

約数和(自身を含む): 66074400

約数和(自身を除く): 44787330

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 49, 54, 63, 70, 90, 98, 105, 126, 135, 147, 189, 210, 245, 270, 294, 315, 378, 441, 490, 630, 735, 882, 945, 1323, 1470, 1609, 1890, 2205, 2646, 3218, 4410, 4827, 6615, 8045, 9654, 11263, 13230, 14481, 16090, 22526, 24135, 28962, 33789, 43443, 48270, 56315, 67578, 72405, 78841, 86886, 101367, 112630, 144810, 157682, 168945, 202734, 217215, 236523, 304101, 337890, 394205, 434430, 473046, 506835, 608202, 709569, 788410, 1013670, 1182615, 1419138, 1520505, 2128707, 2365230, 3041010, 3547845, 4257414, 7095690, 10643535, 21287070]

約数ペア:

[(1, 21287070), (2, 10643535), (3, 7095690), (5, 4257414), (6, 3547845), (7, 3041010), (9, 2365230), (10, 2128707), (14, 1520505), (15, 1419138), (18, 1182615), (21, 1013670), (27, 788410), (30, 709569), (35, 608202), (42, 506835), (45, 473046), (49, 434430), (54, 394205), (63, 337890), (70, 304101), (90, 236523), (98, 217215), (105, 202734), (126, 168945), (135, 157682), (147, 144810), (189, 112630), (210, 101367), (245, 86886), (270, 78841), (294, 72405), (315, 67578), (378, 56315), (441, 48270), (490, 43443), (630, 33789), (735, 28962), (882, 24135), (945, 22526), (1323, 16090), (1470, 14481), (1609, 13230), (1890, 11263), (2205, 9654), (2646, 8045), (3218, 6615), (4410, 4827)]