21781350

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{97}}^1\times {\mathrm{499}}^1$

素因数の和:614

約数の個数: 72

約数和(自身を含む): 59241000

約数和(自身を除く): 37459650

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 75, 90, 97, 150, 194, 225, 291, 450, 485, 499, 582, 873, 970, 998, 1455, 1497, 1746, 2425, 2495, 2910, 2994, 4365, 4491, 4850, 4990, 7275, 7485, 8730, 8982, 12475, 14550, 14970, 21825, 22455, 24950, 37425, 43650, 44910, 48403, 74850, 96806, 112275, 145209, 224550, 242015, 290418, 435627, 484030, 726045, 871254, 1210075, 1452090, 2178135, 2420150, 3630225, 4356270, 7260450, 10890675, 21781350]

約数ペア:

[(1, 21781350), (2, 10890675), (3, 7260450), (5, 4356270), (6, 3630225), (9, 2420150), (10, 2178135), (15, 1452090), (18, 1210075), (25, 871254), (30, 726045), (45, 484030), (50, 435627), (75, 290418), (90, 242015), (97, 224550), (150, 145209), (194, 112275), (225, 96806), (291, 74850), (450, 48403), (485, 44910), (499, 43650), (582, 37425), (873, 24950), (970, 22455), (998, 21825), (1455, 14970), (1497, 14550), (1746, 12475), (2425, 8982), (2495, 8730), (2910, 7485), (2994, 7275), (4365, 4990), (4491, 4850)]