21356790

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7823}}^1$

素因数の和:7853

約数の個数: 64

約数和(自身を含む): 63092736

約数和(自身を除く): 41735946

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 35, 39, 42, 65, 70, 78, 91, 105, 130, 182, 195, 210, 273, 390, 455, 546, 910, 1365, 2730, 7823, 15646, 23469, 39115, 46938, 54761, 78230, 101699, 109522, 117345, 164283, 203398, 234690, 273805, 305097, 328566, 508495, 547610, 610194, 711893, 821415, 1016990, 1423786, 1525485, 1642830, 2135679, 3050970, 3559465, 4271358, 7118930, 10678395, 21356790]

約数ペア:

[(1, 21356790), (2, 10678395), (3, 7118930), (5, 4271358), (6, 3559465), (7, 3050970), (10, 2135679), (13, 1642830), (14, 1525485), (15, 1423786), (21, 1016990), (26, 821415), (30, 711893), (35, 610194), (39, 547610), (42, 508495), (65, 328566), (70, 305097), (78, 273805), (91, 234690), (105, 203398), (130, 164283), (182, 117345), (195, 109522), (210, 101699), (273, 78230), (390, 54761), (455, 46938), (546, 39115), (910, 23469), (1365, 15646), (2730, 7823)]