20846994

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:255

約数の個数: 64

約数和(自身を含む): 49520640

約数和(自身を除く): 28673646

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 61, 79, 103, 122, 158, 183, 206, 237, 309, 366, 427, 474, 553, 618, 721, 854, 1106, 1281, 1442, 1659, 2163, 2562, 3318, 4326, 4819, 6283, 8137, 9638, 12566, 14457, 16274, 18849, 24411, 28914, 33733, 37698, 43981, 48822, 56959, 67466, 87962, 101199, 113918, 131943, 170877, 202398, 263886, 341754, 496357, 992714, 1489071, 2978142, 3474499, 6948998, 10423497, 20846994]

約数ペア:

[(1, 20846994), (2, 10423497), (3, 6948998), (6, 3474499), (7, 2978142), (14, 1489071), (21, 992714), (42, 496357), (61, 341754), (79, 263886), (103, 202398), (122, 170877), (158, 131943), (183, 113918), (206, 101199), (237, 87962), (309, 67466), (366, 56959), (427, 48822), (474, 43981), (553, 37698), (618, 33733), (721, 28914), (854, 24411), (1106, 18849), (1281, 16274), (1442, 14457), (1659, 12566), (2163, 9638), (2562, 8137), (3318, 6283), (4326, 4819)]