21598185

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{173}}^1$

素因数の和:258

約数の個数: 64

約数和(自身を含む): 42094080

約数和(自身を除く): 20495895

約数列:

[1, 3, 5, 7, 15, 21, 29, 35, 41, 87, 105, 123, 145, 173, 203, 205, 287, 435, 519, 609, 615, 861, 865, 1015, 1189, 1211, 1435, 2595, 3045, 3567, 3633, 4305, 5017, 5945, 6055, 7093, 8323, 15051, 17835, 18165, 21279, 24969, 25085, 35119, 35465, 41615, 49651, 75255, 105357, 106395, 124845, 148953, 175595, 205697, 248255, 526785, 617091, 744765, 1028485, 1439879, 3085455, 4319637, 7199395, 21598185]

約数ペア:

[(1, 21598185), (3, 7199395), (5, 4319637), (7, 3085455), (15, 1439879), (21, 1028485), (29, 744765), (35, 617091), (41, 526785), (87, 248255), (105, 205697), (123, 175595), (145, 148953), (173, 124845), (203, 106395), (205, 105357), (287, 75255), (435, 49651), (519, 41615), (609, 35465), (615, 35119), (861, 25085), (865, 24969), (1015, 21279), (1189, 18165), (1211, 17835), (1435, 15051), (2595, 8323), (3045, 7093), (3567, 6055), (3633, 5945), (4305, 5017)]